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    Home » Recipes » Halloween

    Halloween Oreo Cake Bars

    Updated: Oct 13, 2025 · Published: Oct 4, 2022 by Eileen Murphy Kelly

    Jump to Recipe
    Servings 9 bars
    Prep 5 minutes mins
    Cook 25 minutes mins
    Halloween dessert bars made with oreos pinterest pin with text overlay.
    A Pinterest pin with text overlay of a cookie bar with oreos, and colored sprinkles on a white plate.

    These Halloween Cake Bars are soft gooey cookie bars that are filled with Halloween Oreos, sprinkles, and a sweet taste. If are seeking a sweet treat to serve at your next Halloween party, then this is the recipe for you!

    Jump to:
    • ❤️ Why you'll love this recipe
    • Ingredients
    • Equipment
    • Instructions
    • Storage
    • Expert Tips
    • Frequently Asked Questions
    • Variations
    • Serving Suggestions
    • Similar recipes
    • 📖 Recipe
    • 💬 Comments

    ❤️ Why you'll love this recipe

    • These Halloween cookie cake bars are soft, chewy, and filled with delicious flavor.
    • Halloween dessert bars are made with simple ingredients that are all easy to find at your local grocery store.
    • Halloween cake bars are also festive, fun, and perfect for any Halloween party!

    Ingredients

    As an Amazon Associate, I earn from qualifying purchases.

    • Halloween Oreos
    • French Vanilla Cake Mix
    • whole milk
    • canola oil
    • large eggs
    • Halloween Sprinkles, divided
    • non-stick baking spray

    Equipment

    • Stainless Steel Mixing Bowls
    • Measuring Spoons and Cups
    • Hand Mixer
    • Spatula
    • 9" x9" cake pan

    Instructions

    This is an overview of the recipe. The full instructions are below in the recipe card.

    Step by step instructions to make an Oreo cookie cake for Halloween.
    1. Preheat oven to 350°F/177°C. Prep a 9" x 13" inch baking dish. Set aside.
    2. Place Oreos in a large bag and use a rolling pin to chop the Oreos into large chunks. Spread half of the chopped Oreos over the bottom of the prepared baking dish.
    3. In a large mixing bowl, mix in all the cake mix, eggs, oil, and milk. Use an electric hand mixer with beaters attached to beat together the ingredients. This will be thick.
    4. Add 1 cup of sprinkles and half of the remaining chopped Oreos to the cake batter. Mix well.
    5. Spread the cake batter on top of the crushed Oreos. Work carefully so that the Oreos don’t move around.
    6. Use the spatula to slowly and carefully spread the batter. Make sure that the batter covers all four corners of the baking pan. Add the remaining chopped Oreos and sprinkles to the top of the batter
    7. Bake in the preheated oven for 20-25 minutes. Check to see if the bars are baked at the 20-minute mark. Insert a toothpick in the center. f it comes out clean the bars are done. Allow the cake to cool in the pan before cutting.
    8. Serve and enjoy.
    Halloween dessert bars sliced in a white plate.

    Storage

    Storage: Store these bars in a covered airtight container for up to one week.

    Freezer: You can also freeze these bars in a freezer-safe bag for up to three months. To thaw sit them on the counter and allow the bars to come to room temperature.

    Expert Tips

    Expert Tip: If you want to be able to cleanly cut these Halloween cake bars. I recommend that you line your cake pan with parchment paper, making sure to allow the parchment to overlap the edges. This way once it's cool, you can remove all the bars from the pan easily and then slice them.

    Frequently Asked Questions

    Are these bars cakey or cookie-like?

    These bars are made with a cake mix which makes them cakey instead of a cookie texture.

    How long do cookie bars last?

    Cookie bars can last for a week. Though they taste their best if enjoyed within three days.

    Can I make these cake bars ahead?

    Yes, you can make these bars up to 24 hours ahead of your event.

    Halloween Oreo bars with

    Variations

    Do you want to change up this recipe?

    • I used multi-color Halloween sprinkles, but you can use just orange sprinkles if you want an all-orange Halloween Oreo Cake bar.
    • Usually, I use an offset spatula to press these cookie bars into the 9-inch baking pan because I find it works well to smooth them out.
    • If you want to add more flair to these cake bars you can place some Halloween M&M's on top of the Oreos before you bake these bars.

    Serving Suggestions

    • Are you looking for a savory meal to serve this Halloween? If so, then this Halloween Mummy Taco Bread is not only an easy recipe for the busy day, but it's also kid-friendly! And, your family will enjoy it!
    • Chicken Bacon Ranch French Bread Pizza is a favorite and would be a delicious recipe to make with these Halloween treats.
    • This fun spooky green Witch's Brew Cocktail drink for our adult friends, it's a great beverage to sip on while you watch the trick-or-treaters go door to door.
    • If you are craving something with more chocolate on the Halloween dessert table, I recommend that you make these Hocus Pocus Brownies! They are rich and fudgy, and your friends and family will rave about them.

    Similar recipes

    • Looking for more spooky treats to serve this Halloween? Look no further than this Halloween Graveyard Cake. It's one of my favorite recipes to make from cake mixes, and it's festive and fun for the holiday!
    • If you love Halloween recipes like this one, next time you may want to try Halloween Mummy Cookies! They are festive and filled with peanut butter, and kids love them!
    • These easy Halloween Cupcakes are the perfect way to add a pop of color to your Halloween dessert recipe. Plus, they have a nice festive look that your guests will love.
    • Check out all our Halloween recipes here.

    I love any comments or questions. Please feel free to leave them below.

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    Eileen  xo

    If you click on the number of servings in the recipe card you can adjust the measurements up or down for the exact number of servings you need.

    If you love this recipe please give it 5 stars! ⭐️⭐️⭐️⭐️⭐️

    📖 Recipe

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    Halloween Oreo Cake Bars

    Delicious and easy Halloween Cake bars are made with vanilla boxed cake mix, Halloween Oreos, and festive sprinkles.
    Print (Email Required) Pin Rate
    Course: Snack
    Cuisine: American
    Keyword: halloween cake bars, Halloween dessert bars, Halloween Oreo cake bars
    Prep Time: 5 minutes minutes
    Cook Time: 25 minutes minutes
    cooling time: 20 minutes minutes
    Total Time: 50 minutes minutes
    Servings: 9 bars
    Calories: 5211kcal
    Author: Eileen Kelly

    As an Amazon Associate, I earn from qualifying purchases

    Equipment Needed:

    • 9" x 13" cake pan
    • Stainless Steel Mixing Bowls
    • Measuring Spoons and Cups
    • Hand Mixer
    • Spatula

    Ingredients

    • 1 (1 pound) box Halloween Oreos
    • 1(15.2ounce) box French Vanilla Cake Mix
    • ½ cup whole milk
    • ½ cup Canola OIl
    • 2 large eggs
    • 2 cups Halloween Sprinkles, divided
    • non-stick baking spray

    Instructions

    • Preheat oven to 350°F/ 177°C. Prep a 9" x 13" inch baking dish. Set aside.
    • Place Oreos in a large bag and use a rolling pin to chop the Oreos into large chunks. Spread half of the chopped Oreos over the bottom of the prepared baking dish.
    • In a large mixing bowl, mix in the cake mix, eggs, oil, and milk. Use an electric hand mixer with beaters attached to beat together the ingredients. This will be thick
    • Add 1 cup of sprinkles and half of the remaining chopped Oreos to the cake batter. Mix well.
    • Spread the cake batter on top of the crushed Oreos. Work carefully so that the Oreos don’t move around.
    • Use the spatula to slowly and carefully spread the batter. Make sure that the batter covers all four corners of the baking pan. Add the remaining chopped Oreos and sprinkles to the top of the cake batter
    • Bake in the preheated oven for 20-25 minutes. Check to see if the bars are baked at the 20-minute mark. Insert a toothpick in the center. if it comes out clean the bars are done. Allow the cake to cool in the pan before cutting.
    • Serve and enjoy.

    NOTES

    Be sure to check Expert Tips and FAQs above with important tips and questions that can help make a delicious recipe. 
    Storage: Store these bars in a covered airtight container for up to one week.
    Freezer: You can also freeze these bars in a freezer-safe bag for up to three months. To thaw, set them in the refrigerator and allow the bars to come to defrost.
    I'm not a registered dietician, I do my best to provide the most accurate nutritional values. Any nutritional data I provide is an approximation. Actual dietary information can vary based on ingredients and portion sizes.
     
    Don’t forget to shop at the Everyday Eileen store on Amazon.

    Nutrition

    Serving: 1slice | Calories: 5211kcal | Carbohydrates: 1019g | Protein: 58g | Fat: 108g | Saturated Fat: 38g | Polyunsaturated Fat: 19g | Monounsaturated Fat: 45g | Trans Fat: 5g | Cholesterol: 43mg | Sodium: 8040mg | Potassium: 1355mg | Fiber: 20g | Sugar: 539g | Vitamin A: 88IU | Calcium: 2250mg | Iron: 56mg
    Tried this recipe?Mention @Everyday_Eileen or tag #everydayeileen!

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    Thank you for sharing!

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