1 1/2 c. flour
1 c. sugar
1/2 tsp. baking powder
1 tsp. baking soda
1/2 tsp. salt
1/2 c. sour milk
1/2 c. oil
2 eggs
2-3 bananas, mashed
1/2 c. coarsely chopped walnuts

1/2 teaspoon vinegar added to milk will sour milk.

Sift together first 5 ingredients into large bowl. Mix milk, oil, eggs and bananas. Add to dry ingredients; mix well. Add nuts. Line cupcake tins with liners. Fill 1/2 full. Sprinkle cinnamon/sugar on top. Bake 20 minutes at 350 degrees. Muffins will be very moist.