Peanut Butter Marshmallow Cookie Bars

Total Time
Prep 30 mins
Cook 25 mins

I got this recipe from a friend, after having it on our cookie exchange tray at Christmas. These are wonderful! Very rich and addictive at our house. We looove peanut butter :)

Ingredients Nutrition

  • Crust

  • 1 (18 1/2 ounce) package yellow cake mix with pudding
  • 13 cup margarine
  • 1 large egg
  • 3 cups mini marshmallows
  • Topping

  • 23 cup corn syrup
  • 14 cup margarine
  • 2 teaspoons vanilla
  • 1 (12 ounce) package peanut butter chips
  • 2 cups crisp cereal (rice krispies or equivelent)


  1. Heat oven to 350°.
  2. CRUST In a large bowl combine the cake mix, margarine, and egg.
  3. Mix until crumbly.
  4. Press into bottom of ungreased 13x9 pan.
  5. Bake at 350° for 15-20 minutes or until golden brown.
  6. Remove from oven and immediately sprinkle with 3 cups mini marshmallows.
  7. Return to oven for 1-2 minutes until marshmallows begin to puff.
  8. TOPPING In large saucepan, heat corn syrup, margarine, vanilla, and peanut butter chips until chips are melted and mixture is smooth.
  9. (Stir constantly) Remove from heat and stir in cereal.
  10. Immediately spread over crust.
  11. Chill and cut into bars.


Most Helpful

Like a Fluffernutter sandwich!

PumpKIM February 11, 2011

The recipe that I have includes 2 cups of salted peanuts added with the rice krispies. I made these for Christmas with rave reviews.

lfageri February 08, 2011

I brought these to a pot luck for work and they were gone in a flash!! Everyone loved them and I have to bring the recipe in for several ladies. Thanks for the terrific recipe!

fancyfrancy June 13, 2008

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