Buttermilk Banana Bars

In a large mixing bowl, combine the all-purpose flour, sugar, baking powder, baking soda, and salt. Make a well in the center of the dry ingredients. In a medium bowl stir together the butter, buttermilk, mashed banana, and eggs. Add to dry ingredients. Stir just until combined. Fold in walnuts.

Spread in a greased 15x10x1-inch baking pan. Bake in a 350 degree F oven for 25 to 30 minutes or until a toothpick inserted in the center comes out clean. Cool completely.

Prepare Cream Cheese Frosting. Spread over the cooled dessert. Cut into bars. Store in refrigerator. Makes 48 bars.