Banana Nut Rice Krispies Treats

3 T margarine or butter

1-10 oz package regular marshmallows or 4 cup miniature marshmallows

3 T banana instant pudding mix

1 1/2 tsp walnut flavoring

6 C Rice Krispies cereal

Melt margarine in large saucepan over low heat. Add marshmallows and stir until completely melted. Remove from heat. Stir in banana pudding mix and walnut flavoring.  Add Rice Krispies cereal. Stir until well coated.  Using buttered spatula or wax paper, press mixture evenly into 13 x 9 x 2-inch pan coated with cooking spray. Cut into 2-inch squares when cool. Best if served the same day.