1Heat oven to 350°F. Spray rectangular pan, 13x9x2 inches, with cooking spray. Beat granulated sugar, brown sugar and banana in large bowl until well blended. Add egg and oats; beat well. Stir in flour and baking soda until well blended. Spread in pan.
2Bake 16 to 20 minutes or until bars spring back when touched lightly in center.
3Remove from oven; place on wire rack. Immediately sprinkle white baking chips over bars. Let stand 1 to 2 minutes to melt; spread over bars. Sprinkle with toffee bits. Cool at least 30 minutes. For bars, cut into 6 rows by 4 rows.