No Flour Monster Cookie Bars

If you love cookies but want something even easier, No Flour Monster Cookie Bars are the answer. These chewy, chocolatey, peanut buttery bars are loaded with oats, chocolate chips, and M&Ms—all without a single scoop of flour.

Perfect for bake sales, family gatherings, or an anytime sweet craving, these bars deliver all the flavor of traditional monster cookies but with a soft, chewy bar texture that’s even more irresistible.

And the best part? They’re naturally gluten-free, quick to make, and kid-approved. With no chilling, rolling, or complicated steps, this recipe takes the stress out of baking while delivering maximum flavor.

Ingredients

• 1 cup creamy peanut butter
• ¾ cup brown sugar, packed
• ¼ cup granulated sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 2 cups rolled oats
• ½ teaspoon baking soda
• 1 cup chocolate chips
• 1 cup M&Ms (or other candy-coated chocolates)

Instructions

1. Preheat oven: Preheat oven to 350°F (175°C). Line an 8×8 baking dish with parchment paper.
2. Mix wet ingredients: In a large bowl, beat peanut butter, brown sugar, granulated sugar, eggs, and vanilla until smooth.
3. Add dry ingredients: Stir in oats and baking soda until combined.
4. Fold in mix-ins: Gently fold in chocolate chips and half the M&Ms.
5. Spread batter: Press the mixture evenly into the prepared baking dish.
6. Top with candy: Sprinkle remaining M&Ms on top and lightly press them in.
7. Bake: Bake for 20–25 minutes until the edges are golden and center is set.
8. Cool: Allow bars to cool completely in the pan before slicing.
9. Serve: Cut into squares and enjoy chewy, candy-studded goodness.

Why You’ll Love This Recipe

• Flourless & gluten-free: Uses oats instead of flour.
• Quick & simple: No chilling or rolling dough.
• Kid-friendly: Bright, colorful, and packed with M&Ms.
• Perfect texture: Chewy, soft, and rich.
• Customizable: Swap M&Ms with Reese’s Pieces or nuts.

Tips for Success

• Don’t overbake: Bars firm up as they cool, so remove when just set.
• Line the pan: Makes cleanup and cutting much easier.
• Use creamy peanut butter: Avoid natural peanut butter that separates.
• Add variety: Mix in shredded coconut, raisins, or different candies.
• Cut when cool: Prevents bars from crumbling.

Serving Suggestions

• Serve warm with a scoop of vanilla ice cream.
• Pack in lunchboxes for a sweet treat.
• Bring to holiday gatherings or bake sales.
• Drizzle with melted chocolate for extra indulgence.

No Flour Monster Cookie Bars

Chewy, candy-studded cookie bars made without flour. Packed with oats, peanut butter, chocolate chips, and M&Ms for a gluten-free treat everyone loves!

Print Recipe Pin Recipe

Prep Time 10 minutes mins

Cook Time 25 minutes mins

Total Time 35 minutes mins

Servings: 12 bars

Course: Dessert, Snack

Cuisine: American

Calories: 280

Ingredients Equipment Method Notes

Ingredients

  

• 1 cup creamy peanut butter
• 3/4 cup brown sugar packed
• 1/4 cup granulated sugar
• 2 large eggs
• 1 tsp vanilla extract
• 2 cups rolled oats
• 1/2 tsp baking soda
• 1 cup chocolate chips
• 1 cup M&Ms or candy-coated chocolates

Equipment

• Mixing bowl
• Electric mixer
• Spatula
• 8×8 baking dish
• Parchment paper

Method

 

1. Preheat oven to 350°F (175°C). Line an 8×8 baking dish with parchment paper.
2. Beat peanut butter, brown sugar, granulated sugar, eggs, and vanilla until smooth.
3. Stir in oats and baking soda until combined.
4. Fold in chocolate chips and half of the M&Ms.
5. Press mixture evenly into prepared baking dish.
6. Sprinkle remaining M&Ms on top and lightly press them in.
7. Bake for 20–25 minutes until edges are golden and center is set.
8. Allow bars to cool completely before slicing.
9. Cut into squares and enjoy.

Notes

Best made with creamy peanut butter. Avoid overbaking for chewier bars. Store airtight up to 5 days or freeze up to 2 months.

Storage & Freezing

• Room temperature: Store in airtight container up to 5 days.
• Refrigerator: Keeps fresh for up to 1 week.
• Freezer: Freeze sliced bars up to 2 months; thaw before serving.

Conclusion

These No Flour Monster Cookie Bars combine all the best cookie flavors in one chewy, chocolatey, candy-filled bar—without the hassle of rolling dough. Simple, gluten-free, and outrageously delicious, this recipe is guaranteed to become a household favorite.