Banana Bread Muffins

This is from Heather at Running To The Cross. Thanks, Heather!

In a large mixing bowl, cream together:
1 stick butter or margarine
1 cup sugar
Then add:
3 T milk with 1/2 t vinegar to sour
1 egg, beaten
1 t vanilla
Mix together & add to mixture:
1 cup mashed banana (about 2 bananas)
1/2 t baking soda
Mix together & add to mixture:
1 3/4 - 2 cups flour
1 t baking powder
1/2 cup chopped nuts (optional)
1/2 t salt

Mix well. Makes 1 large loaf or 2 small loaves or pour into greased muffin tins. Bake in a preheated 350*F oven for 40-45minutes (or 20-25 minutes for muffins) or until toothpick inserted in center comes out clean.

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