Scale

1 cup all-purpose flour

½ cup cocoa powder

½ tsp baking soda

1 tsp baking powder

¼ tsp salt

½ cup sugar

½ cup milk

½ cup plain yogurt or sour cream

⅓ cup vegetable oil or melted butter

1 egg

1 tsp vanilla extract

¾ cup chocolate chips or chunks

Preheat oven to 375°F (190°C) and line a muffin tin.

In a bowl, mix flour, cocoa, baking soda, baking powder, salt, and sugar.

In another bowl, whisk milk, yogurt, oil, egg, and vanilla.

Combine wet and dry ingredients until just mixed. Fold in chocolate chips.

Spoon into muffin cups and top with extra chocolate if desired.

Bake for 18–20 minutes, or until a toothpick comes out with just a few moist crumbs.