Ingredients

•   Nonstick cooking spray
• 1  8- or 10-ounce package brownie mix
• 1  cup quick-cooking rolled oats
• 1  egg
• 2  to 3 tablespoons water
• 1  cup broken banana chips
• 1  cup milk chocolate pieces (6 ounces)
• 1  cup miniature marshmallows
• 3/4  cup chopped walnuts

Directions

1. Heat oven to 325 degree F. Lightly coat a 13x9x2-inch pan with nonstick spray. Stir together the brownie mix, oats, egg, and water in a medium bowl. With floured hands, spread evenly in bottom of prepared pan. Bake for 5 minutes. Layer banana chips, chocolate pieces, marshmallows, nuts over partially baked crust; press down gently. Bake 15 minutes more. Cool in pan on a wire rack; cut into bars. Makes 24 bars.

2. Make-ahead tip: Cover pan and store at room temperature up to 3 days.