Ingredients
1 1/2 cups all-purpose flour
3/4 cup unsweetened Dutch-process cocoa powder
1 1/2 cups sugar
1 1/2 teaspoons baking soda
3/4 teaspoon baking powder
3/4 teaspoon salt
2 large eggs
3/4 cup warm water
3/4 cup buttermilk
3 tablespoons vegetable oil, such as safflower
1 tablespoon pure vanilla extract
Preparation
Preheat oven to 350 degrees. Line 2 standard muffin tins with paper liners. Whisk together flour, cocoa powder, sugar, baking soda, baking powder, and salt in a medium bowl.
Mix in eggs, water, buttermilk, oil, and vanilla until smooth, about 3 minutes. Divide batter evenly among prepared muffin tins. Bake, rotating tins halfway through, until tops spring back when lightly touched, about 20 minutes. Let cool in tins on wire racks.