Monster Cookies

Monster Cookies

These easy monster cookies are famous for being absolutely DELICIOUS!

Monster Cookies
Monster Cookies
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Rich but simple, this recipe for Monster Cookies will put a smile on your face after just one bite. These cookies honestly are so simple to make, and they use ingredients that you probably already have in your pantry. If the name "monster cookies" isn't enough to convince you, these cookies are so fun to make, too, which makes this a great kid-friendly recipe. That way the whole family can get in on the delicious cookie action!

From the Chef: If you can't quite decide what you're in the mood for, these Monster Cookies have you covered. With peanut butter, oats, M&M's, and chocolate chips, they're a dream dessert for the indecisive baker... or when you're looking to use up some leftover Halloween candy.
- Addie Gundry

This recipe is from RecipeLion's 103 Cookbook series, Easy Cookie Recipes:103 Best Recipes for Chocolate Chip Cookies, Cake Mix Creations, Bars, and Holiday Treats Everyone Will Love.

Preparation Time20 min

Chilling Time30 min

Cooking Time10 min


  • 1/2 cup (1 stick) unsalted butter, softened
  • 1/2 cup light brown sugar, packed
  • 1/4 cup granulated sugar
  • 1 large egg
  • 3/4 cup creamy peanut butter
  • 1 teaspoon vanilla extract
  • 1/4 teaspoon salt
  • 1 1/4 cup all-purpose flour
  • 1/2 teaspoon baking soda
  • 1/2 cup quick-cooking oats
  • 3/4 cup M&M's
  • 1/2 cup semisweet chocolate chips
  • 1/3 cup chocolate sprinkles


  1. Preheat the oven to 350°F. Line two baking sheets with parchment paper.

  2. In a large bowl, cream together the butter, brown sugar, and granulated sugar. Add the egg, peanut butter, vanilla, and salt. Mix until well combined.

  3. In a separate medium bowl, whisk together hte flour and baking soda. Gradually add to the butter mixture. Mix until combined, being careful to not overmix. Fold in the oats, M&M's, chocolate chips, and chocolate candy sprinkles. Chill the dough for 30 minutes. Using a cookie scoop, shape the dough into 2-inch balls and place on the prepared baking sheets about 2 inches apart. Top with extra chocolate candy sprinkles.

  4. Bake for 9 to 10 minutes.

  5. Cool on the baking sheets for 10 minutes; the cookies will firm slightly as they cool. Serve.

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