Go Back
+ servings
Stack of baked Flourless Monster Cookies with red and green M&M’s and chocolate chips, one cookie on top is broken in half showing the chewy interior.

Chewy Flourless Monster Cookies

No ratings yet
These flourless monster cookies are bursting with peanut butter, oats, chocolate chips, and M&Ms for a chewy, colorful treat you’ll love.
Prep Time 15 minutes
Cook Time 14 minutes
Chill Time 30 minutes
Total Time 59 minutes
Servings: 18
Course: Dessert, Snack
Cuisine: American, Baking
Calories: 200

Ingredients
  

  • 1and ½ cups 128g old-fashioned rolled oats (provides chewy texture)
  • 1 teaspoon baking soda leavening agent
  • teaspoon salt enhances flavor
  • 3 tablespoons 43g unsalted butter melted (adds richness)
  • cup 133g packed light or dark brown sugar (sweetness and moisture)
  • 2 large eggs at room temperature binds ingredients
  • 1 teaspoon pure vanilla extract flavor enhancer
  • 1 cup 250g creamy peanut butter (smooth texture adds flavor)
  • ½ cup 105g M&M’s or ⅓ cup (77g) mini M&M’s (colorful candy pieces)
  • cup 60g semi-sweet chocolate chips (chocolate bursts)

Method
 

  1. Whisk the oats, baking soda, and salt together in a medium bowl until evenly combined.
  2. In a large bowl, whisk the melted butter, brown sugar, eggs, and vanilla until smooth.
  3. Add the peanut butter to the wet ingredients and whisk until fully incorporated.
  4. Gradually fold the dry oat mixture into the wet mixture using a silicone spatula until fully combined.
  5. Gently fold in the M&M’s and chocolate chips until evenly distributed throughout the dough.
  6. Cover the dough tightly and refrigerate for at least 30 minutes, or up to 3 days.
  7. Preheat the oven to 350°F (177°C) and line large baking sheets with parchment paper or silicone mats.
  8. Scoop heaping 2-tablespoon (≈45g) portions of dough and place them about 3 inches apart on the prepared baking sheets.
  9. Bake in the preheated oven until the edges are set and golden brown, about 12–15 minutes. The centers will remain soft.
  10. Let the cookies cool on the baking sheet for 10 minutes. Optionally, press a few extra M&M’s or chocolate chips on top for presentation, then transfer to a wire rack to cool completely.
  11. Store leftover cookies in an airtight container at room temperature for up to 1 week.

Nutrition

Serving: 40gCalories: 200kcalCarbohydrates: 25gProtein: 5gFat: 10gSaturated Fat: 3gPolyunsaturated Fat: 2gMonounsaturated Fat: 4gCholesterol: 25mgSodium: 120mgPotassium: 150mgFiber: 2gSugar: 15gVitamin A: 50IUCalcium: 20mgIron: 1mg

Notes

Refrigerate the dough before baking to make shaping easier and keep the cookies chewy. A fun, colorful cookie that’s perfect for sharing or indulging in your favorite sweet treat.

Tried this recipe?

Let us know how it was!