Peanut Butter-Banana Muffins

Peanut Butter-Banana Muffins 1/2 cup (1 stick) butter, softened 1 cup sugar 2 eggs 3/4 cup peanut butter 3 ripe bananas, mashed 1 1/4 cups all-purpose flour 1/2 teaspoon baking soda 1/4 cup chopped peanuts (optional) Preheat oven to 350 degrees F. Coat a 12-cup muffin tin with cooking spray. In a large bowl, beat butter and sugar until creamy. Add eggs and beat until light and fluffy. Stir in peanut butter and bananas; mix well. Add flour and baking soda, mixing just enough to moisten. Spoon batter into muffin cups and sprinkle with nuts, if desired. Bake 20 to 22 minutes, or until a toothpick inserted in center comes out clean.