Preheat your waffle iron according to the manufacturer's directions on a medium-high setting.

In a large mixing bowl, whisk together all-purpose flour, granulated sugar, baking powder, baking soda, and salt.

In a separate bowl, blend together the buttermilk, eggs, melted butter, and vanilla extract until smooth and creamy. Pour the wet mixture into the dry mix, gently stirring until just incorporated.

In a small bowl, whisk together melted butter, brown sugar, and ground cinnamon until well-blended. Transfer to a piping bag for application.

Grease your preheated waffle iron. Pour about 1/2 cup of the batter onto the center, pipe cinnamon mixture on top, close the iron, and cook for 3 to 4 minutes until golden brown.

In a medium bowl, beat cream cheese until smooth. Gradually mix in powdered sugar, milk, and a splash of vanilla extract until the desired consistency is achieved.

Remove waffles from the iron and plate them warm. Generously drizzle cream cheese mixture over the top and serve immediately with fresh berries or other toppings.