Name: Loaded M&M Oreo Cookie Bars
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Ingredients: 1 cup unsalted butter (melted); 1 large egg; 1 cup light brown sugar (packed); 1 tablespoon vanilla extract (pure); 1 cup all-purpose flour; 18 count Oreo Cookies (coarsely chopped); 0.5 cup M&Ms (about, plain or favorite flavor)

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If you’re a cookie lover, you’re going to adore these Loaded M&M Oreo Cookie Bars. Combining the crunch of Oreo cookies with the colorful fun of M&Ms, these bars are indulgent, delicious, and absolutely perfect for sharing—if you can bring yourself to part with them! The gooey center pairs beautifully with the crispy edges, creating an irresistible treat that’s sure to satisfy your sweet tooth. Whether you’re hosting a gathering or just craving a sweet snack, these bars are a fantastic choice. Let’s dive into why this recipe is a must-try and how you can whip them up in your own kitchen!

Why I Love This Recipe

These Loaded M&M Oreo Cookie Bars are the epitome of comfort food. I love how versatile they are; you can easily customize them by using your favorite candies or cookies. The combination of rich chocolatey Oreos and vibrant M&Ms creates a delightful contrast in both flavor and texture. Plus, they come together in just one bowl, making cleanup a breeze! Perfect for both novice bakers and seasoned pros, this recipe is foolproof and delivers delicious results every time.

The Ingredient Lineup

1 cup unsalted butter, melted – This is the base that gives the bars a rich, buttery flavor.
1 large egg – It adds moisture and helps bind the ingredients together.
1 cup light brown sugar, packed – This sweetener adds depth and a slight caramel flavor.
1 tablespoon vanilla extract – Pure vanilla enhances the overall taste of the bars.
1 cup all-purpose flour – The main structure of the bars, creating that perfect chewy texture.
18 Oreo Cookies, coarsely chopped – These add a wonderful chocolate flavor and crunchy texture.
About ½ cup M&Ms – I used plain, but feel free to use your favorite flavor for a colorful twist!

Appliances & Accessories

Mixing bowl – A large bowl will help you easily combine all your ingredients.
Whisk – For mixing together the wet ingredients smoothly.
Spatula – Perfect for folding in the dry ingredients and ensuring everything is well combined.
Baking pan (9×9 inch) – This size is ideal for baking your Loaded M&M Oreo Cookie Bars evenly.
Parchment paper – For easy removal of the bars after baking.

How to Prepare Loaded M&M Oreo Cookie Bars

Step 1: Preheat the Oven

Preheat your oven to 350°F (175°C) and grease your 9×9 inch baking pan or line it with parchment paper for easy removal later.

Step 2: Mix Wet Ingredients

In a large mixing bowl, whisk together the melted unsalted butter, large egg, light brown sugar, and vanilla extract until well combined and smooth.

Step 3: Add Dry Ingredients

Gradually add the all-purpose flour to the wet mixture. Stir gently with a spatula until just combined. Be careful not to overmix!

Step 4: Fold in Oreo Cookies and M&Ms

Fold in the coarsely chopped Oreo cookies and M&Ms until they are evenly distributed throughout the batter.

Step 5: Bake the Bars

Pour the batter into the prepared baking pan and spread it evenly. Bake in the preheated oven for 25-30 minutes, or until the edges are golden brown and a toothpick inserted in the center comes out clean.

Step 6: Cool and Cut

Once baked, remove the pan from the oven and let it cool in the pan for about 10 minutes. Then, transfer to a wire rack to cool completely before cutting into bars.

Vegan & Vegetarian Swaps

Butter: Replace with vegan butter or coconut oil.
Egg: Use a flaxseed egg (1 tablespoon ground flaxseed + 2.5 tablespoons water) as a binding agent.
Brown Sugar: Ensure it’s not processed with bone char; use organic brown sugar instead.
Oreo Cookies: Check for vegan-friendly brands if necessary.

Insider Tips

For extra flavor, consider adding a pinch of sea salt to the batter.
Do not overbake; the bars will continue to cook slightly after being removed from the oven.
If you want a richer chocolate flavor, use double-stuffed Oreos or mix in chocolate chips.
Let the bars cool completely for the best texture when cutting.

Storage Pro Tips

These Loaded M&M Oreo Cookie Bars can be stored in an airtight container at room temperature for up to 4 days. If you want them to last longer, you can refrigerate them for up to a week or freeze them for up to 3 months. Just be sure to wrap them tightly in plastic wrap or foil to prevent freezer burn!

Helpful Q&A

Can I use different types of candy instead of M&Ms?

Absolutely! Feel free to swap M&Ms for any of your favorite candies such as chocolate chips, peanut butter cups, or even chopped nuts for a different flavor profile.

What if I don’t have brown sugar?

You can substitute brown sugar with granulated sugar; however, to mimic the molasses flavor of brown sugar, add a tablespoon of maple syrup or honey to your mixture.

Can I make these bars gluten-free?

Yes! You can use a gluten-free all-purpose flour blend to make these Loaded M&M Oreo Cookie Bars gluten-free without compromising on taste.

How do I know when they are done baking?

Check for a golden edge and a slight jiggle in the center. A toothpick inserted should come out mostly clean; a few crumbs are okay as the bars will firm up as they cool.

Quick Weeknight Wins

Quick Chocolate Chip Cookies – A classic favorite that comes together in minutes!
Easy Brownies – Fudgy and delicious, perfect for any chocolate craving.
No-Bake Cookie Recipes – When you want something sweet without turning on the oven.
30-Minute Desserts – Quick and easy recipes that satisfy your sweet tooth in no time!

Time to Try It

Now that you have the recipe for Loaded M&M Oreo Cookie Bars, it’s time to gather your ingredients and get baking! These bars are perfect for any occasion—birthdays, potlucks, or simply a cozy night in. The combination of flavors and textures is sure to impress everyone. So roll up your sleeves, and let’s make some delicious memories in the kitchen! Enjoy every bite of your Loaded M&M Oreo Cookie Bars, and don’t forget to share your baking adventures with friends and family!