Get ready for a sweet and spooky treat with these Monster Mash Cookie Bars! Perfect for Halloween or any time you want a fun dessert, these cookie bars are loaded with chocolate chips, colorful candy-coated chocolates, and optional monster-themed decorations like candy eyes and Halloween sprinkles. They’re chewy, chocolatey, and oh-so-delicious, making them a hit for both kids and adults alike.

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These bars are simple to make, but they pack a punch of flavor and fun. Whether you add extra mix-ins like marshmallows or pretzels, or keep it classic with just the candies and chocolate chips, these cookie bars are a festive addition to any dessert spread.

Fun Fact: The Magic of Monster Mash Cookie Bars

Monster-themed treats have become a favorite around Halloween, and it’s no surprise why! These Monster Mash Cookie Bars combine the best of both worlds: a chewy cookie base and the fun of colorful, spooky decorations. They’re the perfect way to celebrate Halloween with a dessert that’s both delicious and whimsical.

Storage and Reheating Tips

Store any leftover cookie bars in an airtight container at room temperature for up to 5 days. You can also freeze them for longer storage—just wrap each bar individually in plastic wrap and store in a freezer-safe bag for up to 3 months. Thaw at room temperature before serving.

Cooking Tips

For an even more festive touch, use Halloween-themed M&M’s and add extra candy eyes for maximum spooky fun. You can also get creative with mix-ins like mini marshmallows, pretzels, or crushed cookies to add texture and flavor.

Nutritional Information (Per Serving, Based on 20 Bars):

• Calories: 250 kcal
• Fat: 12g
• Carbohydrates: 33g
• Protein: 3g
• Sugar: 24g
• Sodium: 100mg
• Fiber: 1g

These Monster Mash Cookie Bars are the perfect combination of fun and delicious, ideal for bringing some spooky spirit to your dessert table!

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Monster Mash Cookie Bars Recipe

Ingredients:

• 2 ¼ cups all-purpose flour
• 1 teaspoon baking soda
• ½ teaspoon salt
• 1 cup (2 sticks) unsalted butter, softened
• ¾ cup granulated sugar
• ¾ cup packed brown sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 1 cup semi-sweet chocolate chips
• 1 cup candy-coated chocolates (like M&M’s)
• Monster-themed candy decorations (optional: candy eyes, Halloween sprinkles, or any spooky candy)

Optional mix-ins:

• Mini marshmallows
• Crushed pretzels
• Other candies of your choice

Instructions:

1. Preheat the oven: Set your oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper, allowing the paper to hang over the edges for easy removal later.
2. Mix the dry ingredients: In a medium-sized bowl, whisk together the flour, baking soda, and salt. Set aside.
3. Cream the butter and sugars: In a large mixing bowl, use a hand mixer or stand mixer to cream together the softened butter, granulated sugar, and brown sugar until light and fluffy, about 2-3 minutes.
4. Add the wet ingredients: Beat in the eggs, one at a time, and then add the vanilla extract. Continue mixing until everything is well combined.
5. Combine the dry and wet ingredients: Gradually add the flour mixture to the wet ingredients, mixing on low speed until just combined. Be careful not to overmix the dough.
6. Add the mix-ins: Fold in the semi-sweet chocolate chips and candy-coated chocolates (M&M’s) into the dough. If you’re adding any extra mix-ins like mini marshmallows or pretzels, fold those in as well.
7. Spread the dough: Press the cookie dough evenly into the prepared baking pan, using a spatula to smooth out the top.
8. Decorate: For the monster theme, press candy eyes, Halloween sprinkles, or any other spooky candies onto the surface of the cookie dough before baking.
9. Bake: Place the pan in the preheated oven and bake for 20-25 minutes, or until the edges are golden and a toothpick inserted in the center comes out clean.
10. Cool: Allow the cookie bars to cool completely in the pan. Once cooled, lift the bars out using the parchment paper and cut into squares or rectangles.
11. Serve and enjoy: Your Monster Mash Cookie Bars are ready to serve! Enjoy the spooky fun with friends and family.

Optional Variations

For a gooier treat, add mini marshmallows to the dough before baking. You can also add crushed pretzels for a salty crunch, or throw in other favorite candies like Reese's Pieces or chopped-up candy bars for extra indulgence. If you want a colorful burst, use different seasonal M&M’s for year-round fun!