“Ever had a moment where dessert dreams collide with reality?” That’s exactly how I felt when I crafted this Supreme Chocolate Cake with Chocolate Mousse Filling. Picture this: four layers of ultra-moist chocolate sponge, each filled with a luscious, airy mousse that elevates this cake from mere sweet treat to decadent masterpiece. The best part? This showstopper is surprisingly easy to whip up, making it the perfect star for any celebration, be it a cozy family gathering or a chic soirée. This indulgent dessert brings joy and satisfaction without keeping you in the kitchen all day. Can you resist a slice of pure chocolate bliss? Let’s dive into creating a dessert that promises to leave everyone asking for seconds!

Why Is This Chocolate Cake Irresistible?
Decadence in Every Layer: Each bite of this Supreme Chocolate Cake reveals four moist layers stacked high, oozing with rich chocolate mousse that melts in your mouth.
Effortless Indulgence: You don’t need to be a pastry chef to impress your guests. Simple yet stunning, this cake comes together quickly, so you can enjoy more time with your loved ones.
Perfect for Any Occasion: Whether it’s a birthday, anniversary, or just because, this cake is sure to be the highlight of any gathering.
Flavor Overload: The combination of chocolate sponge and mousse ensures a depth of flavor that satisfies even the most discerning chocolate enthusiasts.
Pair it with a dollop of whipped cream or fresh berries for an extra touch, or check out my delightful Black Velvet Cupcakes for another elegant dessert option.
Supreme Chocolate Cake Ingredients
For the Cake
• All-purpose flour – Provides structure to the cake; you can use cake flour for a lighter texture.
• Granulated sugar – Adds sweetness and moisture; no substitutions recommended.
• Unsweetened cocoa powder – Intensifies chocolate flavor; either natural or Dutch-processed cocoa works well.
• Baking soda & Baking powder – Essential leavening agents; do not substitute for proper cake rise.
• Table salt – Enhances flavor and balances sweetness; it’s essential for the cake.
• Hot water – Activates the cocoa, enriching the flavor; for a twist, use hot coffee.
• Instant espresso powder – Deepens the chocolate flavor; optional, but it enhances taste subtly.
• Large eggs – Provides moisture and richness; make sure they’re at room temperature for best results.
• Milk – Adds moisture; whole or 2% milk is recommended, but any type will do.
• Greek yogurt – Contributes tenderness; can be substituted with sour cream.
• Pure vanilla extract – Adds depth of flavor; no substitutions recommended.
For the Mousse
• Heavy cream – The base for the mousse texture; ensure it’s cold for perfect whipping.
• Chocolate chips – The core ingredient for the mousse filling; choose based on your sweetness preference (milk or dark).
• Granulated sugar – Sweetens the mousse; no substitutes recommended.
• Nutella – Adds a delightful hazelnut chocolate flavor; can be omitted if desired.
For the Ganache
• Heavy cream – Creates a smooth chocolate glaze; must be warm to melt chocolate properly.
• Softened butter (optional) – Adds shine to the ganache; feel free to omit if you prefer.
This Supreme Chocolate Cake is truly a chocolate lover’s dream, combining rich flavors with an indulgent experience!
Step‑by‑Step Instructions for Supreme Chocolate Cake
Step 1: Preheat and Prepare Pans
Begin by preheating your oven to 350°F (175°C). While the oven heats, grease two 9-inch round cake pans with butter or cooking spray. For extra assurance, consider lining the bottom with parchment paper to prevent sticking. This preparation ensures that your Supreme Chocolate Cake bakes evenly and can be easily removed after cooling.
Step 2: Mix Dry Ingredients
In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, unsweetened cocoa powder, baking soda, baking powder, and salt. This dry mixture is crucial as it sets the foundation for your cake’s texture and flavor. Mix until well combined, and be sure to break up any clumps of cocoa powder for a smooth batter.
Step 3: Combine Wet Ingredients
In a separate bowl, mix hot water and instant espresso powder until dissolved, then set aside. In another mixing bowl, whisk together the large eggs, milk, Greek yogurt, and pure vanilla extract until the mixture is smooth and fully incorporated. The combination of these ingredients provides moisture and richness to the Supreme Chocolate Cake.
Step 4: Create the Batter
Gradually add the dry ingredients into the wet mixture, alternating with the hot espresso water. Mix gently but thoroughly until just combined, being careful not to overmix. The batter should be smooth and pourable, with a deep chocolate hue. This balance ensures your cake layers are light and infused with rich flavor.
Step 5: Bake the Cake
Divide the batter evenly between the prepared cake pans, smoothing the tops with a spatula. Place them in the preheated oven and bake for 30–35 minutes. To check for doneness, insert a toothpick into the center; it should come out clean. Once baked, allow the cakes to cool in the pans for about 10 minutes before transferring them to wire racks to cool completely.
Step 6: Prepare the Mousse Filling
For the mousse, dissolve cocoa powder and espresso powder in hot water, then melt the chocolate chips over a double boiler until smooth. In a separate bowl, whip cold heavy cream with granulated sugar until stiff peaks form. Carefully fold the cocoa mixture and Nutella (if using) into the whipped cream, blending gently until well combined and airy. Chill the mousse in the refrigerator until you’re ready to assemble the cake.
Step 7: Assemble the Cake
Once the cakes are completely cool, carefully slice each cake horizontally into two layers using a serrated knife. Begin layering the cakes by placing one layer on a serving platter, spreading a generous amount of chocolate mousse filling over it. Repeat this process with the remaining layers, finishing with the last layer of cake on top and reserving some mousse for decoration.
Step 8: Chill Before Serving
Cover the assembled cake loosely with plastic wrap and refrigerate for at least 2 hours, or overnight if time permits. Chilling allows the mousse to set and the flavors to meld beautifully, enhancing the indulgent experience of your Supreme Chocolate Cake.
Step 9: Make the Ganache
To prepare the ganache, heat heavy cream in a small saucepan over medium heat until it begins to simmer. Remove from heat and pour it over the chocolate chips in a mixing bowl. Stir the mixture until the chocolate melts completely and is smooth. If desired, add softened butter for a glossy finish before letting it cool slightly.
Step 10: Glaze the Cake
Once the ganache has cooled but is still pourable, carefully pour it over the top of the chilled cake, allowing it to drip down the sides for that beautiful, drizzled effect. Ensure even coverage and use a spatula to help the ganache flow where needed. Your Supreme Chocolate Cake is now ready for a stunning presentation!

Make Ahead Options
These Supreme Chocolate Cake layers are perfect for meal prep enthusiasts! You can bake the cake and prepare the chocolate mousse filling up to 24 hours in advance. Simply cool the cake layers completely, then wrap them tightly in plastic wrap and refrigerate to keep them moist. The mousse can also be made a day prior; just store it in an airtight container in the fridge. When you’re ready to serve, assemble the cake by layering it with mousse and allowing it to chill in the refrigerator for at least 2 hours or overnight for the best flavor. This method ensures your cake is just as delicious and saves you time, letting you enjoy the celebration without the last-minute rush!
Expert Tips for Supreme Chocolate Cake
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Cool Completely: Allow your cakes to cool entirely before assembly. This prevents sogginess and ensures a clean, firm slice when serving.
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Layering Technique: For the best results, use a long serrated knife to slice the cakes horizontally. This gives you elegant layers and an even mousse filling.
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Chill Time: Refrigerate the assembled cake for at least 2 hours or overnight. This helps the flavors meld beautifully and makes cutting easier.
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Mousse Consistency: Whip the heavy cream until it reaches stiff peaks for a light and airy mousse. Avoid overmixing when folding in the cocoa mixture to maintain volume.
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Ganache Tips: Pour the ganache over the chilled cake while still slightly warm for a smooth, drizzling effect. Use a spatula if needed to help with coverage.
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Storage Secrets: Leftover Supreme Chocolate Cake can be stored in the refrigerator, covered, for up to 5 days. Be sure to enjoy those delicious flavors while fresh!
How to Store and Freeze Supreme Chocolate Cake
Fridge: Store leftover Supreme Chocolate Cake covered in the refrigerator for up to 5 days to maintain its moisture and freshness.
Freezer: If you need to freeze the cake, wrap individual slices tightly in plastic wrap followed by aluminum foil. It can be frozen for up to 3 months.
Reheating: When ready to enjoy, thaw the cake in the fridge overnight. Reheat individual slices in the microwave for about 10-15 seconds to restore its decadent texture.
Assembly Tip: Avoid freezing the assembled cake with the mousse filling, as the texture may become compromised after thawing.
Supreme Chocolate Cake Variations
Feel free to mix things up a bit and personalize your Supreme Chocolate Cake for unique twists and flavors!
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Nut-Free: Substitute Nutella with additional chocolate chips or a dollop of whipped cream for a nut-free delight. The richness still shines through with this swap!
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Citrus Infusion: Use orange-flavored chocolate for a zesty twist! This unexpected flavor adds a bright and refreshing contrast that will surprise your taste buds.
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Minty Fresh: Incorporate peppermint extract into the mousse filling for a festive touch, perfect during the holidays. Just a hint elevates the cake and brings a delightful coolness.
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Spicy Chocolate: Mix in a pinch of cayenne pepper or cinnamon to the batter for a warm kick. This subtle heat perfectly complements the chocolate, creating an indulgent surprise.
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Decadent Ganache: Use a combination of dark and milk chocolate for the ganache to balance the sweetness and depth. This will give your cake a beautifully layered flavor profile.
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Fruity Burst: Swap mousse filling with a raspberry or strawberry puree for a lighter dessert, bringing a refreshing tartness that complements the rich chocolate.
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Gluten-Free Option: Substitute the all-purpose flour with a gluten-free blend, ensuring everyone can enjoy your delicious creation. This variation still keeps the cake tender and moist.
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Coffee Lovers: Enhance the espresso flavor in the batter and mousse with an additional tablespoon of coffee liqueur. The rich, bold flavor pairs beautifully with the chocolate, offering a grown-up twist.
If you’re interested in exploring further, consider checking out how to make a rich Dubai Chocolate Kataifi or some delightful Chocolate Chip Banana Bars perfect for any gathering!
What to Serve with Supreme Chocolate Cake
Imagine the delightful feast awaiting you as you gather around the table, ready to indulge in this heavenly chocolate dessert.
- Fresh Berries: Juicy raspberries or strawberries offer a tart contrast that cuts through the rich sweetness, creating a beautiful balance.
- Whipped Cream: A dollop of lightly sweetened whipped cream adds a fluffy texture, enhancing the cake’s luxurious layers with creamy goodness.
- Chocolate Chip Cookies: Pair with warm chocolate chip cookies for a delightful chocolate overload that every sweet tooth will savor.
- Coffee or Espresso: A cup of freshly brewed coffee highlights the cake’s chocolate notes, making the perfect indulgent afternoon treat.
- Ice Cream: Serve with vanilla or chocolate ice cream, introducing a creamy element that melts lovingly over a warm slice of cake.
- Mint Chocolate Ganache Tart: Create a cohesive chocolate theme with a refreshing minty tart for an elegant dessert presentation at gatherings.
- Nutty Biscotti: Crunchy almond or hazelnut biscotti adds a unique texture and a nutty flavor that complements the chocolate perfectly.
- Red Wine: A glass of fruity red wine pairs beautifully with rich chocolate, enhancing the overall dining experience and sophistication.
- Chocolate Sauce Drizzle: Turn your slice into an experience by drizzling extra chocolate sauce for a glorious sweet finish.

Supreme Chocolate Cake Recipe FAQs
What type of cocoa powder should I use for the Supreme Chocolate Cake?
I recommend using either natural or Dutch-processed cocoa powder to enhance the chocolate flavor. Natural cocoa provides a more pronounced chocolate taste, while Dutch-processed offers a milder, richer flavor. Both are excellent options for this recipe!
How should I store leftovers of the Supreme Chocolate Cake?
To keep your delicious cake fresh, store any leftovers covered in the refrigerator for up to 5 days. This will help to maintain its moisture and flavor. Just make sure to use an airtight container or wrap it well with plastic wrap to prevent the cake from drying out.
Can I freeze the Supreme Chocolate Cake?
Absolutely! If you want to save some for later, you can freeze individual slices wrapped tightly in plastic wrap, followed by aluminum foil. This method will keep it fresh for up to 3 months. When you’re ready to enjoy it, thaw the slices in the fridge overnight and reheat in the microwave for about 10-15 seconds.
What if my cake layers come out too dry?
If your Supreme Chocolate Cake layers end up dry, it might be due to overbaking or using too much flour. To avoid this, ensure you’re accurately measuring your ingredients and check the cake for doneness a few minutes before the recommended baking time. Remember, a toothpick inserted into the center should come out clean but not leave the cake crumbly.
Can I make this cake gluten-free?
Yes! For a gluten-free version of the Supreme Chocolate Cake, you can substitute all-purpose flour with a gluten-free all-purpose flour blend, which can work well without altering the texture much. However, make sure the blend contains xanthan gum or a similar ingredient to help the cake rise properly.
Is the Supreme Chocolate Cake suitable for those with nut allergies?
If you have nut allergies, you can simply omit the Nutella from the mousse filling, or replace it with more chocolate chips to keep that chocolaty richness without compromising safety. Always double-check labels for any potential cross-contamination or traces of nuts in your other ingredients.

Supreme Chocolate Cake: The Ultimate Indulgence You Need
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and grease two 9-inch round cake pans.
- In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, cocoa powder, baking soda, baking powder, and salt.
- In a separate bowl, mix hot water and espresso powder until dissolved. In another bowl, whisk eggs, milk, yogurt, and vanilla until smooth.
- Gradually add the dry ingredients into the wet mixture, alternating with the hot espresso water until just combined.
- Divide the batter evenly between the prepared pans and bake for 30-35 minutes or until a toothpick comes out clean.
- Prepare the mousse by dissolving cocoa and espresso in hot water, then melt the chocolate chips. Whip heavy cream with sugar until stiff peaks and fold in cocoa mixture and Nutella.
- Once the cakes are cool, slice each into two layers, layer them with mousse, reserving some for decoration.
- Refrigerate the assembled cake for at least 2 hours.
- For ganache, heat cream until simmering, pour over chocolate chips and stir until smooth. Add butter if desired.
- Pour ganache over the cake, allowing it to drip down the sides for coverage.

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