1. 1. Prepare your dry ingredients: In a large mixing bowl, whisk together the all-purpose flour, unsweetened cocoa powder, granulated sugar, baking powder, and salt until well combined. Ensure there are no lumps of cocoa powder.

2. 2. Combine wet ingredients: In a separate medium bowl, whisk together the milk, melted butter, eggs, and vanilla extract until smooth.

3. 3. Mix wet and dry: Pour the wet ingredient mixture into the dry ingredient mixture. Stir gently with a whisk or spatula until just combined. It’s okay if there are a few small lumps; overmixing can lead to tough waffles.

4. 4. Heat your waffle iron: Preheat your waffle iron according to the manufacturer’s instructions. Lightly grease it with cooking spray or a little melted butter if your waffle iron isn’t non-stick.

5. 5. Cook the waffles: Pour about 1/2 to 3/4 cup of batter (or the amount recommended by your waffle iron’s manual) onto the hot waffle iron. Close the lid and cook for 3-5 minutes, or until the waffle is golden brown, crisp, and cooked through. The steam will usually stop escaping when it’s ready.

6. 6. Serve immediately: Carefully remove the cooked waffle from the iron and place it on a plate. Repeat with the remaining batter. Top generously with fresh sliced strawberries and serve warm.