Soft-Baked Monster Cookies Recipe

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Jesus Jacobs Modified: March 24, 2022
Soft-Baked Monster Cookies Recipe

How To Make Soft-Baked Monster Cookies

No one will be able to resist these soft-baked monster cookies. Made with oats, M&Ms, peanut butter, and chocolate chips for chunky and chewy treats.

Preparation: 20 minutes
Cooking: 20 minutes
Total: 40 minutes



  • ½cupsalted butter,(1 stick) softened to room temperature
  • ½cuplight brown sugar,packed
  • ¼cupgranulated sugar
  • ¾cupcreamy peanut butter
  • 1large egg,at room temperature
  • 1tsppure vanilla extract
  • ½tspbaking soda
  • cupsall purpose flour,spoon and leveled
  • ½cupquick oats
  • ¾cupM&Ms,any size or variety
  • ½cupsemisweet chocolate chips


  1. Preheat oven to 350 degrees F. Line baking sheet with parchment paper or silicone baking mat.

  2. In a large bowl, using a hand-held mixer or stand mixer with paddle attachment, cream the butter and sugars together on medium speed for about 3 minutes.

  3. Mix in the peanut butter, egg, and vanilla (in that order) to butter-sugar mixture. Scrape down the sides of the bowl as needed. Slowly mix in the baking soda and flour. Do not over-mix.

  4. At low speed, beat in the quick oats, M&Ms, and chocolate chips just until incorporated.

  5. Rolls about 2 tablespoons of dough, onto prepared baking sheet. Press a few extra M&Ms on top for looks, if preferred.

  6. Bake for 11 to 13 minutes– the cookies will still look a little soft, which is recommended. Slightly press down the baked cookies with the back of a spoon.

  7. Allow cookies to cool on baking sheet for 10 minutes before transferring to a wire rack. Cookies will firm up as they cool.

  8. Serve and enjoy.

Recipe Notes

If the dough is very soft and unmanageable by hand, chill the dough for 30 minutes before rolling.


  • Calories: 147.45kcal
  • Fat: 8.65g
  • Saturated Fat: 3.88g
  • Trans Fat: 0.14g
  • Monounsaturated Fat: 3.12g
  • Polyunsaturated Fat: 1.08g
  • Carbohydrates: 15.94g
  • Fiber: 0.90g
  • Sugar: 9.63g
  • Protein: 2.74g
  • Cholesterol: 15.06mg
  • Sodium: 53.11mg
  • Calcium: 14.83mg
  • Potassium: 77.10mg
  • Iron: 0.61mg
  • Vitamin A: 31.46µg
  • Vitamin C: 0.03mg
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