Baked Chocolate-Coffee Donuts

Preheat the oven to 400 degrees F (200 degrees C). Grease a 6-cavity donut pan with 1 teaspoon butter and set aside.

Whisk flour cocoa powder and baking powder together in a large bowl. Set aside.

Whisk brown sugar 1/4 cup plus 2 tablespoons buttermilk coffee egg 1 tablespoon butter and vanilla extract together in another bowl. Add milk mixture to flour mixture; whisk until blended and smooth. Stir in chocolate chips.

Pour batter into a large resealable plastic bag cut 1 corner and squeeze batter into the prepared donut pan filling each mold about 2/3 full.

Bake in the preheated oven until donuts spring back when lightly pressed about 8 minutes. Let cool in the pan on a wire rack for about 5 minutes; turn pan over directly onto rack to release donuts. Allow to cool for 5 minutes more.