Total Time
Prep 20 mins
Cook 16 mins

I have been making these ever since my son was younger, it has always remained a favorite in our just love these, and grownups has a wonderful brownie-like bottom, oooey, goooey marshmallow filling in the middle, topped with the most delicious buttery peanut butter Rice Krispies topping...this is one you are sure to love.

Ingredients Nutrition


  1. Set oven to 350 degrees.
  2. Butter a 13" x 9" baking pan.
  3. In a mixing bowl, cream butter and brown sugar, until light and fluffy.
  4. Beat in egg yolks and vanilla.
  5. Combine the flour, baking powder, salt and baking soda; gradually add to creamed mixture, until mixture resembles coarse crumbs (do not overmix).
  6. Press mixture into bottom of prepared baking dish (don't pack down too hard) Bake for 12-14 minutes, or until golden brown.
  7. Remove from oven, and immediately sprinkle with marshmallows; bake for 2-3 minutes longer, or until marshmallows are puffed.
  8. Cool on wire rack.
  9. For topping: In a saucepan, combine the cornsyrup, butter and peanut butter chips; cook, and stir over medium heat until chips are melted and the mixture is smooth.
  10. Remove from heat; stir in the vanilla, cereal, nuts and M&M's.
  11. Spread over the baked crust.
  12. Cool before cutting.