BARS:

1 box 1-step Angel food cake mix
1 can Wilderness lemon pie filling

Mix cake mix and lemon pie filling together and spread in jelly roll pan. Bake for 15 minutes at 350 degrees.

FROSTING (whipped butter frosting) :
3/4 c. white sugar
3 tbsp. flour
1 egg, beaten
3/4 c. milk
Pinch of salt
3 tbsp. powdered sugar
1 tsp. vanilla
1/2 c. butter, softened
1/2 c. nuts, ground

Mix dry ingredients and add milk; mix well. Add beaten egg and cook until thick, stirring all the while. Let cool. Add 3 tablespoons powdered sugar. Whip butter for 5 minutes and add. Spread on cooled bars. Sprinkle with chopped nutmeats.