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A stack of three halloween magic cookie bars on a small white plate on a purple surface.
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5 from 3 votes

Halloween Seven Layer Magic Bars

Halloween Seven Layer Bars are piled high with treats! A base of refrigerated chocolate chip cookie dough is topped with layers of Oreos, chocolate chunks, Reeses Pieces, M&Ms, and gooey sweetened condensed milk. The finishing touch is a handful of candy corn and some Halloween sprinkles!
Prep Time15 mins
Cook Time45 mins
Cooling Time2 hrs
Total Time3 hrs
Course: Dessert
Cuisine: American
Servings: 15 bars
Calories: 482kcal


  • 16 ounces Ready to Bake refrigerated chocolate chip cookies
  • 16 Halloween Oreos chopped and divided
  • 1 cup chocolate chunks divided
  • 1 cup Halloween M&Ms divided
  • 14 ounces sweetened condensed milk
  • ¼ cup Reese's pieces
  • ½ cup candy corn
  • ¼ cup Halloween Sprinkles optional


  • Preheat the oven to 350°F and line a 9x13-inch baking pan with parchment paper.
  • Press the chocolate chip cookie dough evenly into the bottom of the pan.
  • Bake for 15 minutes.
  • After baking, sprinkle half of the Oreos, chocolate chunks, and M&M's over the top of the cookie layer.
  • Pour the sweetened condensed milk over the top, do you best to do an even coating, but it doesn't need to fully cover.
  • Layer with the remaining Oreos, chocolate chunks, and M&M's and then layer on the Reese's Pieces.
  • Bake for an additional 25 to 30 miutes. The condensed milk will begin to have a caramel color when it's done.
  • Remove from the oven and top with the candy corn and sprinkles and allow the bars to cool in the pan for at least 2 hours before removing and slicing.
  • If you made these 7 Layer Cookie Bars, I'd love for you to leave a review and rating to let others know how you liked the recipe!


  • These bars can be kept at room temperature for up to 4 days.
  • To Freeze: Store in an airtight container or freezer bag, they should keep in the freezer for about 3 months.
  • Substitutions & Variations:
    • Try experimenting with different kinds of candies, chocolate chips, cookies, and toppings to make your own layers! Some suggestions:
      • Candy layer: Crushed Butterfinger, Kit Kats, Heath Bars, Reese’s Cups 
      • Cookie layer: Crumbled Biscoff cookies, graham crackers, Golden Oreos, Chips Ahoy
      • Chocolate chip layer: Dark, milk, or white chocolate chips, peanut butter, or caramel chips. You can also sprinkle the chocolate chips on top after baking so they don’t completely melt. 
      • Other add-ins: Crushed pretzels, chopped nuts, and flaked coconut. 


Calories: 482kcal | Carbohydrates: 69g | Protein: 6g | Fat: 21g | Saturated Fat: 10g | Cholesterol: 14mg | Sodium: 219mg | Potassium: 240mg | Fiber: 2g | Sugar: 51g | Vitamin A: 107IU | Vitamin C: 1mg | Calcium: 104mg | Iron: 2mg