NUTTER BUTTER Mississippi Mud Bars

Top a packaged brownie mix with layers of marshmallows, peanut butter cookies and chocolate icing for an easy homemade treat!

Let's whip it up

Prep time:

0 min

Total time:

0 min



Ingredient list

  • 30 NUTTER BUTTER Peanut Butter Sandwich Cookies, divided
  • 1 pkg. (18.3 to 19.5 oz.) fudge brownie mix  (13x9-inch pan size)
  • 1 pkg. (10 oz.) miniature marshmallows
  • 1¼ cups ready-to-spread chocolate frosting

Nutrition facts

Recipe Tips


Heat oven to 350°F.


Line 13x9-inch pan with foil, with ends of foil extending over sides; spray with cooking spray. Chop 3 cookies; reserve for later use.


Prepare brownie batter and bake in prepared pan as directed on package until toothpick inserted in center comes out with fudgy crumbs. (Do not overbake.)


Top with marshmallows; bake 3 to 5 min. or until puffed. Immediately top with remaining cookies in 3 rows of 9 cookies each; press gently into marshmallow topping to secure. Cool completely.


Spoon frosting into microwaveable bowl. Microwave on HIGH 25 sec. or just until softened; stir. Spoon evenly over dessert; spread to completely cover top of dessert. Sprinkle with reserved chopped cookies.


Refrigerate 3 hours.