In a mixing bowl, whisk together the milk, large egg, melted butter, and pure vanilla extract until well combined. The melted butter should be slightly cooled to prevent cooking the egg.
In another bowl, sift together the all-purpose flour, unsweetened cocoa powder, granulated sugar, and baking powder. This step is crucial as it removes any lumps and ensures an even distribution of the dry ingredients.
Gradually add the dry mixture to the wet ingredients, stirring gently until just combined. Be careful not to overmix; a few lumps are perfectly fine. Fold in the mini chocolate chips for that extra burst of chocolate in every bite.
Preheat your griddle or non-stick skillet over medium heat. You can lightly grease it with a bit of butter or cooking spray if desired.
Pour about ¼ cup of batter for each pancake onto the hot griddle. Cook until bubbles form on the surface and the edges look set, about 2-3 minutes. Carefully flip the pancakes and cook for an additional 1-2 minutes on the other side until cooked through.
Serve your Double Chocolate Pancakes warm, drizzled with maple syrup, a dollop of whipped cream, or topped with fresh fruit. Enjoy the delightful explosion of chocolate in each mouthful!