Easy M&M Cookie Bars Recipe
🤔 Have You Ever Wanted a Dessert That’s Quick, Fun, and Perfect for Any Occasion?
If you’re looking for something sweet that brings joy to any gathering, these M&M Cookie Bars are your answer. They’re chewy, chocolatey, and loaded with colorful candies that make every bite exciting. Whether it’s for a school bake sale, family picnic, or just because—you deserve this easy treat .
Let’s dive into what makes these bars so special and how you can make them at home in no time!

What Makes These M&M Cookie Bars Special?
These M&M Cookie Bars combine the best of classic cookies with the convenience of bar form. No need to roll dough—just mix, spread, and bake! Here’s why they stand out:
- Quick & Easy: Ready in 30 minutes
- Perfect Texture: Chewy base with crunchy candy pieces
- Family-Friendly: Loved by kids and adults alike
- No Fancy Ingredients Needed: Just pantry staples and your favorite M&Ms
Difficulty level: Beginner-friendly 😊
Time required: About 30 minutes total (15 minutes prep + 15 minutes baking)
Table of Contents
🧾 Ingredients for M&M Cookie Bars
Here’s what you’ll need to make a batch of delicious M&M Cookie Bars:
Dry Ingredients:
- 2 cups all-purpose flour
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
Wet Ingredients:
- 1 cup unsalted butter (softened)
- 3/4 cup brown sugar
- 3/4 cup granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
Mix-ins:
- 1 cup old-fashioned oats (optional for texture)
- 1 cup M&M candies (any variety!)
- 1/2 cup chocolate chips (semi-sweet or milk chocolate)
You can also add nuts, sprinkles, or even coconut flakes if you like extra flair .

👩🍳 Step-by-Step Instructions
Let’s walk through how to make these fun and festive M&M Cookie Bars. Don’t worry—it’s super simple!
Step 1: Preheat Your Oven
Preheat your oven to 350°F (175°C). Line an 8×8-inch or 9×9-inch baking pan with parchment paper for easy removal .
Step 2: Cream the Butter and Sugars
In a large mixing bowl, beat together the softened butter, brown sugar, and granulated sugar until light and fluffy. This takes about 2–3 minutes with a hand mixer or stand mixer .
Step 3: Add Eggs and Vanilla
Crack in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract until fully combined .
Step 4: Combine Dry Ingredients
In a separate bowl, whisk together the flour, baking soda, and salt. Slowly add the dry ingredients to the wet mixture while mixing on low speed. Blend until just combined—don’t overmix!
Step 5: Fold in Mix-ins
Gently fold in the oats (if using), M&Ms, and chocolate chips using a spatula. Make sure everything is evenly distributed .
Step 6: Press Into Pan
Transfer the thick cookie dough into your prepared baking pan. Use your hands or a spatula to press it down evenly into the corners . The dough will be dense, but that’s okay!
Step 7: Bake Until Golden
Bake for 15–18 minutes or until the edges are lightly golden. The center might still look slightly underdone, but it will set as it cools .
Step 8: Cool and Slice
Let the bars cool completely in the pan before slicing into squares. For cleaner cuts, use a sharp knife or pizza cutter .
🎨 Assembly Tips for Perfect M&M Cookie Bars
Want your M&M Cookie Bars to look as good as they taste? Try these pro tips:
- Use Parchment Paper Liners: This helps lift the whole batch out of the pan for neat slicing .
- Press Down Firmly: Make sure the dough is packed tightly in the pan so the bars hold their shape.
- Add a Drizzle: Once cooled, drizzle melted chocolate or white icing on top for extra flair .
- Sprinkle Extra M&Ms on Top: Before baking, gently press a few more candies onto the surface for a bakery-style finish .
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📦 Storage & Make-Ahead Tips
Good news: these M&M Cookie Bars store beautifully!
How to Store:
- At Room Temperature: Keep in an airtight container for up to 5 days. Layer parchment between slices to prevent sticking .
- Refrigerate: If your kitchen is warm, refrigerate for up to a week.
- Freeze: Wrap individual bars in plastic wrap and store in a freezer-safe bag for up to 3 months. Thaw at room temperature when ready to eat .
Make Ahead Ideas:
- Dough Prep: Mix the dough ahead and refrigerate for up to 24 hours before baking.
- Double Batch: Make two pans at once—one to enjoy now, one to freeze for later!
🔄 Recipe Variations to Try
Love experimenting in the kitchen? Here are some fun twists on classic M&M Cookie Bars:
- Peanut Butter Swirl: Add a spoonful of peanut butter to the top of the dough before baking and swirl with a toothpick.
- S’mores Style: Swap half the M&Ms for graham cracker pieces and mini marshmallows. Top with more marshmallows halfway through baking and broil briefly.
- White Chocolate M&Ms: Use white chocolate candies instead of regular ones for a sweeter twist.
- Healthy Version: Replace half the butter with applesauce and use whole wheat flour for a lighter option .
🌟 Final Thoughts
There’s nothing quite like biting into a soft, chewy M&M Cookie Bar filled with colorful candies and rich chocolate flavor. It’s a dessert that brings smiles and memories—whether you’re baking with kids, bringing something to share, or just treating yourself.
So go ahead, try this easy recipe, and don’t be afraid to get creative. After all, the best part of baking is making it your own. Happy baking! 🍪

❓ Frequently Asked Questions (FAQs)
Q: Can I use margarine instead of butter?
A: Yes, but real butter gives the best flavor. For best results, stick with unsalted butter .
Q: Are these M&M Cookie Bars healthy?
A: While they’re not diet food, you can make small swaps like using whole wheat flour or applesauce to cut fat and calories .
Q: Can I make these gluten-free?
A: Absolutely! Substitute the all-purpose flour with a 1:1 gluten-free baking blend .
Q: How do I keep the bars from spreading too much?
A: Make sure your butter is at room temperature and press the dough firmly into the pan .
Q: Can I use other candies instead of M&Ms?
A: Of course! Try Skittles, Reese’s Pieces, or chopped candy bars for different flavors .
Q: Do I have to chill the dough?
A: No, these bars are made without chilling. Just mix, press, and bake .
Q: How many servings does this make?
A: Depending on how you slice them, this recipe makes 9–16 bars .
Now that you’ve got the full scoop on making perfect M&M Cookie Bars, it’s time to grab your apron and get baking. With this easy, crowd-pleasing recipe, you’ll always have a sweet surprise ready to go!
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