Got this recipe from a C&H sugar bag.
2 cups all purpose flour (unbleached)
2/3 cup sugar
2 tsp baking powder
1 cup reduced fat sour cream
1/4 cup canola oil
1 egg
1 tsp vanilla extract
1/2 cup blueberries
1/2 cup raspberries
1/2 cup chopped nuts
Preheat oven to 400*. Lightli spai muffin cups or use cup cake papers. Whisk flour, sugar, baking powder, baking soda in that order. In a SEPARATE bowl, whisk sour cream, oil, egg, vanilla, in that order until it becomes smooth. Then pour cream mixture into flour mixture, and stir until moistened. Fold in berries and nuts. Spoon batter into prepared muffin cups. Bake in preheated oven for 18-24 minutes or until golden and tops spring back when lightl touched.
Should make 12 large or 18 small muffins.