Cranberry Muffins

-1/2 cup butter, softened
-1 cup sugar
-2 eggs
-1 teaspoon vanilla extract
-1 cup sour cream
-2 cups all-purpose flour
-1 teaspoon baking powder
-1/2 teaspoon baking soda
-1/4 teaspoon salt
-1 cup chopped fresh or frozen cranberries

1. In a mixing bowl, cream butter and sugar
2. Add eggs and vanilla; mix well
3. Fold in sour cream
4. Combine flour, baking powder, baking soda and salt; stir into the creamed mixture just until moistened
5. Fold in cranberries
6. Fill greased or paper-lined muffin cups two thirds full
7. Bake at 400 degrees F for 20-25 minutes or until muffins test done
8. Cool in pan 10 minutes; remove to a wire rack