Gluten-Free Monster Cookies

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  • Prep Time

    10 mins

  • Cook Time

    12 mins

  • Total Time

    22 mins

  • Servings

    18 cookies

  • Calories

    222 kcal

  • Course

    Dessert, Snacks

  • Cuisine

    American

Gluten-Free Monster Cookies

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Flourless monster cookies with rich peanut butter flavor, chewy oats, and crisp edges. This version uses added oat flour for better structure, mini M&Ms for even candy distribution, and no specialty flours—just simple, gluten-free ingredients that bake up soft and sturdy every time.

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Ingredients

Servings
  • 1 cup peanut butter 250g, creamy
  • ¼ cup butter 56g, room temperature
  • ½ cup granulated sugar 100g
  • ½ cup brown sugar 100g
  • 2 egg large
  • 1 teaspoon vanilla extract
  • ½ cup quick oats 155g, gluten-free
  • 1 ½ cupa oat flour 53g, see notes, gluten-free
  • 1 teaspoon baking soda
  • ½ teaspoon salt
  • ½ cup mini M&Ms
  • ½ cup peanut chopped

Instructions

  1. Preheat and Prep: Preheat oven to 350°F (180°C). Line a baking sheet with parchment paper and set aside a wire rack for cooling.
  2. Cream Ingredients: In a large bowl or stand mixer, room temperature butter, granulated sugar, and brown sugar. Mix until light and smooth. Scrape down the bowl to make sure everything is evenly incorporated.
  3. Add Wet Ingredients: Add in well-mixed peanut butter, eggs, and vanilla extract. Beat until mixture is fully combined and creamy.
  4. Combine Dry Ingredients: In a separate small bowl, whisk together oat flour, quick oats, baking soda, and salt. Stir this into the wet mixture until fully combined. The dough will be thick.
  5. Add Mix-ins: Fold in mini M&Ms and chopped peanuts. If the dough feels overly soft, chill it for 10–15 minutes to firm it up.
  6. Scoop and Decorate: Scoop dough using a large or tablespoon-sized cookie scoop. Roll into balls and place on prepared baking sheet, spacing them out. Press a few extra M&Ms and peanuts on top for a finished look. Gently flatten each cookie with a flat-bottomed glass or spatula.
  7. Bake and Cool: Bake for 10–12 minutes, until the edges are golden brown and the centers still look slightly soft. Let cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.

Notes

  • Oat Flour Note: You can make oat flour by grinding your quick cooking oats in a blender or food processor until finely ground.
  • Storage: Store cooled cookies in an airtight container at room temperature for 3–4 days or freeze for up to 2 months. For best texture after freezing, reheat in the microwave for 10 seconds.
  • Recipe Tips:
  • **Gluten Note: Use only certified gluten-free oats and candies to keep the recipe safe for celiac-friendly baking.
  • Make-Ahead Tip: For meal prep, freeze the cookie dough balls on a baking sheet, then transfer to a freezer-safe bag. Bake from frozen—just add 1–2 extra minutes to the baking time.
  • Peanut Butter Tip: Use well-stirred peanut butter; too much oil leads to greasy cookies.
  • Dairy-Free Option: Use vegan butter instead of regular butter.
  • No Mini M&Ms? Use regular M&Ms or chocolate chips instead.

Nutrition Information

Show Details
Serving 1cookie Calories 222kcal (11%) Carbohydrates 21g (7%) Protein 5g (10%) Fat 14g (22%) Saturated Fat 4g (20%) Polyunsaturated Fat 2g (12%) Monounsaturated Fat 6g (30%) Cholesterol 26mg (9%) Sodium 220mg (9%) Potassium 131mg (3%) Fiber 1g (4%) Sugar 17g (34%) Vitamin A 118IU (2%) Vitamin B12 0.05µg (2%) Vitamin C 0.03mg (0%) Calcium 26mg (3%) Iron 1mg (6%) Zinc 1mg

Nutrition Facts

Serving: 18cookies

Amount Per Serving

Calories 222 kcal

% Daily Value*

Serving 1cookie
Calories 222kcal 11%
Carbohydrates 21g 7%
Protein 5g 10%
Fat 14g 22%
Saturated Fat 4g 20%
Polyunsaturated Fat 2g 12%
Monounsaturated Fat 6g 30%
Cholesterol 26mg 9%
Sodium 220mg 9%
Potassium 131mg 3%
Fiber 1g 4%
Sugar 17g 34%
Vitamin A 118IU 2%
Vitamin B12 0.05µg 2%
Vitamin C 0.03mg 0%
Calcium 26mg 3%
Iron 1mg 6%
Zinc 1mg

* Percent Daily Values are based on a 2,000 calorie diet.

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