In a large bowl, whisk together 1 ¾ cups of all-purpose flour, ½ cup of cocoa powder, ¾ cup of granulated sugar, 2 teaspoons of baking powder, 1 teaspoon of baking soda, and a pinch of salt for about 3 minutes.

In a separate bowl, blend together 2 cups of milk, ½ cup of melted unsalted butter, 2 large eggs, and 1 teaspoon of vanilla extract for about 2 minutes until smooth and creamy.

Gently pour the wet mixture into the dry ingredients and stir with a spatula until just combined, about 1 minute.

While the batter rests for 5 minutes, preheat your waffle iron, lightly brush the plates with melted butter or nonstick spray.

Once preheated, pour ¼ to ⅓ cup of batter into each cavity, cooking for 3 to 4 minutes or until deep brown.

Carefully remove the waffles and serve immediately while warm with your choice of toppings.