M&M's Halloween Cookie Bars: Chewy Fun for Spooky Treats

Celebrate Halloween with these M&M'S Halloween Cookie Bars, bursting with color and chewy goodness.

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Prep Time 15

Cook Time 35

Cooling Time 2

Total Time 2 50

Servings: 16 bars

Course: Dessert

Cuisine: American

Calories: 250

Ingredients Equipment Method Nutrition Notes

Ingredients

For the Batter

2 sticks Unsalted Butter Provides richness and moisture; use margarine if dairy-free.
1 cup Granulated Sugar Sweetens the bars without being overly sweet; coconut sugar is a healthier alternative.
1 cup Brown Sugar Adds moisture and a subtle caramel flavor; dark brown sugar gives a richer taste.
3 large Eggs Binds ingredients effectively; substitute with flax eggs for a vegan version.
1.5 teaspoons Pure Vanilla Extract Enhances overall flavor; a fresh vanilla bean gives an intense aroma.
3 cups All-Purpose Flour Provides necessary structure; a 1:1 gluten-free blend works for gluten-free diets.
0.75 teaspoon Baking Soda Crucial for helping the bars rise; always ensure it’s fresh for best results.
0.75 teaspoon Salt Balances sweetness; reduce if using salted butter.

For the Mix-ins

1.5 cups Halloween M&M's Adds fun colors and texture; substitute with seasonal candies for variety.
1 cup Mini Chocolate Chips Contributes richness; dark chocolate chips offer a deeper flavor.

Equipment

Stand mixer
9x13 inch baking pan
spatula

Method

Step-by-Step Instructions

Preheat your oven to 350°F (175°C) and prepare a 9x13 inch baking pan with foil and nonstick cooking spray.
In a stand mixer, combine unsalted butter, granulated sugar, and brown sugar. Beat until fluffy and light in color, about 2-3 minutes.
Add the eggs one at a time, mixing on low until fully incorporated after each. Pour in vanilla extract and mix until smooth.
Gently add flour, baking soda, and salt to the wet ingredients, mixing just until combined; avoid overmixing.
Fold in Halloween M&M's and mini chocolate chips, reserving some for topping.
Spread the dough evenly in the prepared pan.
Top with reserved M&M's and mini chocolate chips. Bake for 30-35 minutes until golden brown and a toothpick comes out clean.
Let the bars cool completely in the pan on a wire rack, about 1-2 hours. Cut into squares to serve.

Nutrition

Serving: 1barCalories: 250kcalCarbohydrates: 35gProtein: 3gFat: 11gSaturated Fat: 7gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gCholesterol: 30mgSodium: 150mgPotassium: 100mgFiber: 1gSugar: 18gVitamin A: 200IUCalcium: 30mgIron: 1mg

Notes

Measure flour accurately and allow bars to cool completely before cutting for the best texture and presentation.

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