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The Best Monster Cookies

October 15, 2025 by Davee Kilian Leave a Comment

These Monster Cookies are so full of flavor and yummy goodness in every bite. This Monster Cookies recipe is great for crowds, storing in the freezer or just enjoying warm and fresh. It comes together with most pantry staples and takes less than 10 minutes to mix up. Bring these Monster Cookies to your next gathering and people will be asking for more!

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Monster cookie on cooling rack pin.

There is something nostalgic for me about a monster cookie. Growing up, my mom used to make these for a church picnic, a youth event or for a family gathering. We rarely came home with many cookies if any. When it comes to a delicious treat, these Monster cookies cannot be beat for sharing.

TIPS FOR MAKING THE BEST MONSTER COOKIES

  • Use creamy peanut butter that is no stir. Natural peanut butter will not make the cookies turn out as well.
  • Which oats to use? Rolled oats do work, however they make for a cookie that cmay crumble a little easier. Quick oats may be the better choice.
  • Mix with an electric mixer or a large stand up mixer. With this cookie being a larger batch recipe, using a mixer works well.
  • Use butter not coconut oil or olive oil. Butter has the best taste and consistency for this cookie recipe.
  • These cookies can either be frozen as the dough balls and baked later or baked and frozen. Store them in a ziplock bag or airtight container for up to 3 months.
  • If this recipe is too much in volume, feel free to cut the recipe in half.
Plated cookies with colorful candy scattered and glass of milk.

WHAT YOU NEED

Tools:

Very large mixing bowl

Electric mixer or stand mixer

Measuring cups

Measuring spoons

Baking sheet

Parchment paper

Ingredients:

Oats – quick or rolled

Flour – unbleached all-purpose

White Sugar

Brown Sugar – light or dark

Peanut Butter – no stir creamy peanut butter, but not natural peanut butter

Eggs

Butter – softened

Vanilla

Baking Soda

M & M’s – use the plain candy

Chocolate Chips – use semi-sweet chips

HOW TO MAKE THE BEST MONSTER COOKIES

Preheat oven to 350 degrees.

In a large bowl or stand mixer combine the sugars and butter. Mix well until smooth.

Add in the eggs, vanilla and peanut butter. Cream together well.

Combine the flour, oats and baking soda with the creamed mixture.

Add the M & M’s and chocolate chips and stir those in until evenly mixed.

Bowl of cookie dough

Shape the cookie dough into one to one and a half inch balls and place on a parchment lined baking sheet about 2 inches apart.

Cookie dough balls on parchment paper unbaked.

Bake in the 350 degree oven for 10-12 minutes. Do not over bake.

Monster cookies on cooling rack.

Enjoy warm or store in airtight container for 5 days or freeze in ziplock bag for up to 3 months.

If you tried this recipe and enjoyed it, please come back and give this recipe a five star!

Other Cookie Recipes To Try

Chocolate chip cookies

Chewy Ginger Molasses Cookies

3 Ingredient Banana Cookies

The Best Monster Cookies

These Monster Cookies are so full of flavor and yummy goodness in every bite. This Monster Cookies recipe is great for crowds, storing in the freezer or just enjoying warm and fresh.
Print Recipe Pin Recipe
Prep Time 10 mins
Cook Time 12 mins
Total Time 22 mins
Course Dessert
Cuisine American
Servings 72

Equipment

  • mixing bowl Large since it is a big batch recipe
  • Electric mixer or stand mixer
  • measuring cups
  • measuring spoons
  • baking sheet 11 x 13 jelly roll style pan
  • parchment paper

Ingredients
  

  • 1 cup butter
  • 1½ cups white sugar
  • 1½ cups brown sugar dark or light
  • 42 oz creamy peanut butter not natural peanut butter
  • 1½ tsp vanilla
  • 6 eggs
  • 4 tsp baking soda
  • 6 cups oats Instant oats work best, but rolled are okay.
  • 2 cups all-purpose flour
  • 2 cups M & M's
  • 2 cups chocolate chips semi-sweet

Instructions
 

  • Preheat oven to 350 °F
  • In a large bowl or stand mixer combine the sugars and butter. Mix well until smooth.
  • Add in the eggs, vanilla and peanut butter. Cream together well.
  • Combine the flour, oats and baking soda with the creamed mixture.
  • Add the M & M's and chocolate chips and stir those in until evenly mixed.
  • Shape the cookie dough into one to one and a half inch balls and place on a parchment lined baking sheet about 2 inches apart.
  • Bake in the 350 degree oven for 10-12 minutes. Do not over bake.
  • Enjoy fresh and warm, store in airtight container for 5 days or freeze in ziplock bag for up to 3 months.

Notes

    • Use creamy peanut butter that is no stir. Natural peanut butter will not make the cookies turn out as well.
    • Which oats to use? Rolled oats do work, however they make for a cookie that can crumble a little easier. Quick oats would be recommended for this recipe.
    • Mix with an electric mixer or a large stand up mixer. With this cookie being a larger batch recipe, using a mixer works well.
    • Use butter not coconut oil or olive oil. Butter has the best taste and consistency for this cookie recipe.
    • These cookies can either be frozen as the dough balls and baked later or baked and frozen. Store them in a ziplock bag or airtight container for up to 3 months.
    • If this recipe is too much in volume, feel free to cut the recipe in half.
Keyword cookies, monster cookies

Filed Under: Desserts Tagged With: cookies, monster cookies, oatmeal cookie, peanut butter cookie

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