Monster Cookie Bars

Marie Gill



☆☆☆☆☆ 0 votes

20 Min
15 Min


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1 stick
butter, softened
1 c
brown sugar
1 c
white sugar
1 1/2 c
peanut butter
1 tsp
2 tsp
baking soda
4 1/2 c
1 c
chocolate chips
1 c
plain m & m’s

How to Make Monster Cookie Bars


  • 1Preheat oven to 350
    In your mixer, place the softened butter, brown sugar, white sugar, peanut butter, eggs, vanilla and baking soda. I prefer to use crunchy peanut butter.
  • 2Mix together until creamy.
  • 3Add the oatmeal, chocolate chips and M & M’s and stir by hand until well blended.
  • 4Spread into a greased 10×15-inch pan. You can use a 9×13 pan for a bigger bar but my personal preference is the 10×15 “brownie” pan. It gives the bars a cookie-crisp edge and they bake quickly
  • 5The recipe states to bake 14 minutes. I checked mine after 14 minutes and decided to leave them in another 4 minutes so I would recommend 18 minutes. They should be golden brown around the edges and the center should just be starting to turn light brown.
  • 6Let bars cool before cutting. They are very soft and moist so they will cut better if they have had a chance to firm up.
    Note: There is no flour in this recipe.
  • 7These are just like the original Monster Cookies, but much faster and easier.

Printable Recipe Card

About Monster Cookie Bars

Course/Dish: Other Snacks
Main Ingredient: Sugar
Regional Style: American

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