- 1/4 cup butter, softened
- 3/4 cup sugar
- 1 egg
- 1/4 cup sour cream
- 1 1/2 cups all-purpose flour
- 2 teaspoons baking powder
- 1 teaspoon salt
- 1/3 cup milk
- 1 cup fresh or frozen blueberries
- 1 cup chopped fresh or frozen rhubarb
- In a small mixing bowl, cream butter and sugar. Add egg and sour cream; mix well. Combine the flour, baking powder and salt; add to creamed mixture alternately with milk. Fold in blueberries and rhubarb.
- Fill 12 greased or paper-lined muffin cups about two-thirds full. Bake at 400 degrees F for 20-25 minutes or until a toothpick comes out clean. Cool for 5 minutes before removing from pans to wire racks.