To make cherry chocolate muffins, preheat oven to 350°F and line a muffin pan. In a bowl, combine flour, sugar, cocoa, baking powder, baking soda, and salt.
In another bowl, whisk sour cream, buttermilk, oil, eggs, and vanilla. Fold in cherries and chocolate chips. Fill muffin cups halfway, bake for 25 minutes, then cool on a rack.