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+ servings
a stack of 4 monster cookies on top of each other

Monster Cookie Recipe

Thick, chewy, and loaded with M&Ms, chocolate, butterscotch, and more, this Monster Cookie Recipe is the perfect treat for every occasion! 
Prep Time 10 mins
Cook Time 10 mins
Total Time 20 mins
Course Dessert
Cuisine American
Servings 20 -24 cookies
  • 1/2 cup chocolate chips
  • ½ cup butterscotch chips
  • 1/2 cup M&M’s candy
  • 1 stick unsalted butter (room temperature)
  • 1 ¼ cup creamy peanut butter
  • 1 teaspoon vanilla extract
  • 1/2 teaspoon salt
  • 3/4 cup granulated sugar
  • 1 cup packed light brown sugar
  • 3 large eggs (room temperature)
  • 2 teaspoons baking soda
  • 3 cups rolled oats
  • 1 ¼ cup all-purpose flour
  • Preheat the oven to 350 °F. Line a cookie sheet with parchment paper or non-stick baking mats.
  • In a large bowl, combine the butter, peanut butter, and sugars. Mix well.
  • Add 1 egg at a time, scraping the dough from the edges of the bowl in between. Add the vanilla.
  • In a second large bowl, add the oats, flour, baking soda, and salt. Mix until combined.
  • Add the dry ingredients to the bowlwith the wet ingredients, and mix until they are just combined.
  • Fold in the M&M’s, chocolate chips, and butterscotch.
  • Portion the dough into 1/4th cup-sized balls, and place htem 4 inches apart on the prepared cookie sheet.
  • Bake for 8-10 minutes. Be careful not to overbake!
  • As soon as the cookies are removed from the oven, gently push them down with the back of a spatula. Let them stand for 3 minutes before transferring them to a wire rack to cool completely.
  • Store in large resealable plastic bags or an airtight container for up to 1 week.


The dough can easily be stored in the freezer for up to 6 months. To do so, portion out the dough, and place the mounds on a cookie sheet. Then, place them in the freezer for a few minutes to set. Once set, transfer them to an airtight container, and freeze completely.
If the dough is not portioned before freezing, it will need to be fully thawed before baking. Otherwise, it can be baked while frozen.
Keyword baking, chocolate, cookies, dessert, monster cookies
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