Get ready for a seriously delicious collision of flavors and textures! These M&M Cookie Bars with Oreos and Peanut Butter Cups are the ultimate treat for anyone who loves the combination of chewy cookies, crunchy chocolate, and creamy peanut butter candies.
They're easy to make, perfect for sharing, and guaranteed to satisfy your sweet tooth.
Your baking adventure doesn't have to stop here! Discover more easy cookie recipes and unlock a world of delicious possibilities.
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Imagine sinking your teeth into a soft and chewy cookie bar, studded with colorful M&Ms and chunks of Oreo cookies and peanut butter candy cups.
With every bite, you'll experience a delightful symphony of flavors and textures that will leave you wanting more. Trust me, these cookie bars are dangerously addictive!
Looking for more easy dessert recipes? Try my Candy Cookie Bars, Peanut Butter Chocolate Chip Bars, and even my Chocolate Chip Bars made from a cake mix. Yum!
Table of Contents
- Tips for Perfect Cookie Bars
- 🛒Helpful Kitchen Tools
- Main Ingredients Needed
- Substitutions and Variations
- Step-by-Step Instructions
- Kitchen Tool Spotlight
- Quick Tip
- Baking Instructions
- LOVE this recipe? SAVE it for Later!
- Recipe FAQ's
- Storage and Reheating Instructions
- More Recipes You'll Love!
- 📖 Recipe Card
- 💬 Comments
Tips for Perfect Cookie Bars
Don't overmix the dough: Just like with a traditional cookie recipe, overmixing can lead to tough cookie bars. Mix the ingredients just until combined.
Use high-quality chocolate: Don't substitute off-brand candy pieces, peanut butter cups and chocolate sandwich cookies. There is a difference!
Chill the dough: Chilling the dough for at least 30 minutes will help prevent the cookie bars from spreading too much in the oven.
Use parchment paper: Line your baking pan with parchment paper for easy removal and cleanup.
Don't overbake: Keep a close eye on the cookie bars as they bake. They should be golden brown around the edges and slightly soft in the center.
Let them cool completely: Allow the cookie bars to cool completely in the pan before cutting and serving. This will help them to set and prevent them from crumbling.
🛒Helpful Kitchen Tools
Reynolds Kitchens Cookie Baking Sheets,More Information6-Piece Nonstick Oven Bakeware BakingMore InformationFreezer-to-Oven Safe 3 Qt GlassMore InformationNon-Stick 9 x 13-Inch PanMore Information
Main Ingredients Needed
Below is a quick preview of the ingredients you’ll need. For exact amounts, check the recipe card below. You can also use the "Shopping List button" to create a printable shopping list, or the "Get Ingredients button" in the recipe card to order groceries online.
Substitutions and Variations
- Use holiday M&M's to customize the cookie bars to fit any occasion.
- Pretzels would be a great addition!
- These are a great way to use up leftover Halloween candy like Milk Duds, Rolos, Snickers, Hershey bars, Mr. Goodbars, etc!
Step-by-Step Instructions
Step 1: Whisk the flour, salt, baking powder, and baking soda together and set aside.
Step 2: Mix the melted butter and sugars until well combined then add in the eggs and vanilla.
Step 3: Gradually add the flour mixture to the butter mixture. Be sure to scrape down the sides of the bowl as needed.
Step 4: Add the Oreos to a zip top bag and crush them with a rolling pin or meat mallet. Cut the peanut butter cups into smaller pieces.
Kitchen Tool Spotlight
Say goodbye to stuck-on cookies and hello to easy cleanup! Lining your baking pan with parchment paper is a game-changer.
It's like magic for your baking pan, ensuring your cookie bars slide right out and leave no crumbs behind.
Step 5: Fold the M&M's, cut up peanut butter cups, and crushed Oreos into the cookie dough.
Step 6: Line a 9x13 baking pan with parchment paper. Evenly spread the cookie dough into the pan.
Quick Tip
Check out our blog post for a simple trick to get perfect cuts every time when cutting cookie bars.
Baking Instructions
Step 7: Bake the cookie bars in a preheated 350°F oven for 25-30 minutes or until a toothpick comes out clean from the middle of the pan. Allow the pan to cool on a wire rack.
Step 8: Lift the cookies out of the pan using the parchment paper then use a serrated knife to cut into perfect bars!
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Recipe FAQ's
To view the answers, simply click on the down arrow (⬇) next to each question. If you have any other questions not answered here, please leave a comment!
Bar cookies are made by spreading dough in a pan and cutting it after baking, resulting in a denser, chewier texture, while drop cookies are individually scooped and baked, offering a wider range of textures.
Raw cookie bars in the middle usually mean they weren't baked long enough or the oven temperature was too high, causing the outside to cook faster than the inside. Most bar cookies are fully baked when they reach an internal temperature of 200-205°F (93-96°C). However, to ensure your bars aren't overbaked, start checking for doneness a few minutes before the recipe's suggested baking time. Look for golden brown edges and a toothpick inserted in the center that comes out with a few moist crumbs.
Storage and Reheating Instructions
Room Temperature: Leftover bar cookies can be stored in an airtight container at room temperature for up to 3 days.
Freezer: You can freeze them in an airtight container for up to 3 months. Wrap each cookie individually in plastic wrap or wax paper. This will help to prevent them from sticking together and drying out.
Thaw and Reheat: Allow the bar cookies to defrost overnight in the refrigerator. A fun tip is to reheat them in the microwave for a few seconds to warm up the chocolate chips!
More Recipes You'll Love!
Check out my other recipe for M&M Chocolate Chip Cookies. Or you might like this recipe for Sugar Cookie Bars or Nutella Bar Cookies.
📖 Recipe Card
M&M Cookie Bars with Oreos and Peanut Butter Cups
Ingredients
- 3 cups all purpose flour
- ¾ teaspoon baking powder
- ¾ teaspoon baking soda
- ¾ teaspoon salt
- 1 cup unsalted butter, melted (2 sticks)
- ¾ cup sugar
- 1 cup packed brown sugar
- 2 eggs
- 2 teaspoons vanilla extract
- 1 cup M&M candies
- 18 Oreo cookies, crushed or coarsely chopped
- ½ cup peanut butter cups, chopped
Method
- Preheat the oven to 350°F. Prepare a 9x13 baking pan by spritzing with nonstick cooking spray and lining with parchment paper.
- In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.
- In a mixing bowl, beat the melted butter, sugar, and brown sugar until well combined. Add the eggs and vanilla extract, mixing well.
- Add the flour mixture to the mixing bowl and beat on low until combined, scraping down the sides as needed.
- Fold in the M&M's, Oreos, and peanut butter cups.
- Press the batter evenly into the prepared baking pan.
- Bake for 25 to 30 minutes or until a toothpick inserted in the center returns clean.
- Place the pan on a wire rack and let it cool completely.
- To cut the bars, lift the cookies from the baking pan using the parchment paper. For easier slicing, use a serrated knife.
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