Brownies+Marshmallow+Rice Krispies=?

Who would ever think of putting these things together?  I don't know who did, but they were a genius!  These three-layer bars (Margo Bars) take a little time to throw together, but they are SO worth it! 

First layer: Brownies!

 Second Layer: Marshmallow creme!

Third Layer: Rice Krispies with chocolate & peanut butter

Final Product!

Margo Bars
First Layer:
   1 c. butter
   2 c. sugar
   4 eggs
   6 Tbsp. cocoa
   1 c. flour
   2 tsp. vanilla
   1/2 tsp. salt
       In a mixing bowl, cream butter & sugar.  Add eggs.  Stir in cocoa, flour, vanilla & salt.  Spread in a greased 9x13 pan.  Bake at 350 degrees for 25 minutes or until done.  Cool.

Second Layer:
   1 jar marshmallow creme
      Spread creme over cooled brownies.

Third Layer:
   1 c. peanut butter
   2 c. chocolate chips
   3-4 c. Rice Krispies
      In microwave, melt chocolate chips & peanut butter.  Stir in cereal.  Spread over marshmallow layer.  Chill before cutting.  Store in the refrigerator.