Whisk flour, cocoa powder, sugar and salt together in a bowl.

Beat egg, milk, and vanilla in another bowl, mix in melted butter.

Heat a lightly oiled griddle or skillet over medium- high heat.

For each pancake,pour1/4 cup batter on griddle and cook until bubbles pop. in the center of the pancake, about 2 to 3 minutes.

Flip, and cook an additional minute on the opposite side.