Preheat oven to 350º. Spray a 9x13 pan with non-stick spray. Combine all the ingredients, except for the frosting, in a large bowl and stir until well blended. Pour into prepared pan and bake for 25-30 minutes or until toothpick inserted in center comes out clean. Cool completely, frost, and cut into bars.
Optional: may garnish with chopped nuts of your choice.
Not a NESTLÉ®-tested recipe.