01 - Preheat your waffle iron according to the manufacturer's instructions.
02 - In a large bowl, whisk together the melted butter, milk, eggs, and vanilla extract until well combined.
03 - In a separate bowl, sift together the sugar, cocoa powder, flour, baking powder, and salt.
04 - Gradually add the dry ingredients to the wet mixture, stirring until just combined—do not overmix.
05 - Fold in the chocolate chips until evenly distributed throughout the batter.
06 - Lightly grease the waffle iron. Pour about ½ cup of batter into the center and close the lid. Cook for 3–4 minutes until the waffles are set with a crisp exterior and fudgy center.
07 - Carefully remove each waffle and repeat with the remaining batter. Serve warm as-is, or top with whipped cream, fresh berries, or a drizzle of chocolate sauce.