A batch of delicious monster cookies filled with chocolate chips and M&Ms.
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Why Make This Recipe

Monster cookies are a fun and delicious treat! These cookies combine oats, peanut butter, chocolate chips, and M&Ms for a sweet and chewy experience. They are hearty, satisfying, and perfect for sharing. Whether for a party, a snack, or a special treat, monster cookies are sure to please everyone.

How to Make Monster Cookies

Ingredients:

  • 1 cup peanut butter
  • 1 cup brown sugar
  • 1 cup white sugar
  • 3 large eggs
  • 1 teaspoon vanilla extract
  • 1 teaspoon baking soda
  • 3 cups old-fashioned oats
  • 1 cup chocolate chips
  • 1 cup M&Ms

Directions:

  1. Preheat your oven to 350°F (175°C).
  2. In a large mixing bowl, combine peanut butter, brown sugar, and white sugar. Mix well.
  3. Add the eggs and vanilla extract. Stir until combined.
  4. Add baking soda and mix it in.
  5. Gradually add the oats and mix until fully incorporated.
  6. Fold in the chocolate chips and M&Ms.
  7. Scoop tablespoons of dough onto a baking sheet lined with parchment paper.
  8. Bake for 10-12 minutes or until the edges are golden brown.
  9. Let them cool on the baking sheet for a few minutes before transferring to a wire rack.

How to Serve Monster Cookies

Serve monster cookies warm or at room temperature. You can enjoy them as a snack or dessert. They go great with a glass of milk or a cup of coffee!

How to Store Monster Cookies

Keep monster cookies in an airtight container at room temperature for up to one week. If you want to keep them longer, place them in the freezer for up to three months. Just thaw them at room temperature before serving.

Tips to Make Monster Cookies

  • Use creamy peanut butter for a smoother texture.
  • For a crunchier cookie, add chopped nuts to the dough.
  • Make sure not to overbake the cookies; they should be slightly soft in the center when you take them out of the oven.

Variation

You can customize your monster cookies by adding different mix-ins like dried fruit, white chocolate chips, or even coconut flakes. Get creative!

FAQs

Can I use quick oats instead of rolled oats?
Yes, but rolled oats give a better texture. If you only have quick oats, you can still use them.

Can I make these cookies gluten-free?
Yes! Use gluten-free oats to make your monster cookies gluten-free.

How can I make the dough ahead of time?
You can prepare the dough and store it in the fridge for up to 3 days. You can also freeze the dough and scoop out cookies as you need them.

Monster Cookies

These hearty monster cookies combine oats, peanut butter, chocolate chips, and M&Ms for a delightful treat perfect for sharing.
Prep Time 15 minutes
Cook Time 12 minutes
Total Time 27 minutes
Servings: 24 cookies
Course: Dessert, Snack
Cuisine: American
Calories: 150

Ingredients
  

Main ingredients
  • 1 cup peanut butter Use creamy peanut butter for a smoother texture.
  • 1 cup brown sugar
  • 1 cup white sugar
  • 3 large eggs
  • 1 teaspoon vanilla extract
  • 1 teaspoon baking soda
  • 3 cups old-fashioned oats Rolled oats give better texture than quick oats.
  • 1 cup chocolate chips
  • 1 cup M&Ms

Method
 

Preparation
  1. Preheat your oven to 350°F (175°C).
  2. In a large mixing bowl, combine peanut butter, brown sugar, and white sugar. Mix well.
  3. Add the eggs and vanilla extract. Stir until combined.
  4. Add baking soda and mix it in.
  5. Gradually add the oats and mix until fully incorporated.
  6. Fold in the chocolate chips and M&Ms.
  7. Scoop tablespoons of dough onto a baking sheet lined with parchment paper.
Baking
  1. Bake for 10-12 minutes or until the edges are golden brown.
  2. Let them cool on the baking sheet for a few minutes before transferring to a wire rack.

Notes

Serve monster cookies warm or at room temperature. Store in an airtight container at room temperature for up to one week, or freeze for up to three months. Allow to thaw at room temperature before serving. You can customize by adding dried fruit, white chocolate chips, or coconut flakes. For a crunchier cookie, add chopped nuts to the dough. Do not overbake; cookies should be slightly soft in the center when taken out of the oven.

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Pro Chef & Blogger

My name is James Walker, and I’m the founder and lead recipe developer at Smile Food. With over 7 years of professional culinary experience, I’ve cooked in diverse kitchens, studied global cuisines, and developed a passion for making cooking accessible to everyone.

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