Easy Halloween Oreo Cake Bars Recipe
Introduction
These Easy Halloween Oreo Cake Bars are a festive and delicious treat perfect for any spooky celebration. Combining classic vanilla cake with crunchy Oreo cookies and colorful sprinkles, they’re sure to delight kids and adults alike. Simple to make and irresistibly tasty, they’re a must-try for your Halloween dessert table.

Ingredients
- 2 boxes French Vanilla Cake Mix
- 1/2 cup Whole Milk
- 1/2 cup Vegetable Oil
- 2 Large Eggs
- 1 cup Halloween Sprinkles, divided
- 1 package (1 lb. 4 oz) Halloween Oreo cookies, coarsely chopped, divided
Instructions
- Step 1: Preheat your oven to 350°F (175°C). Line a 9×13-inch baking dish with parchment paper for easy removal.
- Step 2: In a large mixing bowl, combine the cake mixes, milk, vegetable oil, and eggs. Use an electric mixer to beat until the batter is fully incorporated and thick.
- Step 3: Stir in 1/2 cup of the Halloween sprinkles until evenly distributed in the batter.
- Step 4: Spread half of the chopped Oreos evenly across the bottom of the prepared baking dish.
- Step 5: Carefully spoon the thick batter over the Oreos. Spray an offset spatula with nonstick spray and gently smooth the batter to fill the pan evenly.
- Step 6: Sprinkle the remaining Halloween sprinkles over the top of the batter.
- Step 7: Scatter the remaining chopped Oreos on top and gently press them into the batter with your fingers or spatula.
- Step 8: Bake for 20 to 25 minutes, or until a toothpick inserted in the center comes out clean.
- Step 9: Allow the bars to cool completely in the pan before cutting into squares and serving.
Tips & Variations
- For extra moist bars, substitute half of the vegetable oil with melted butter.
- Try using different Oreo flavors for a fun twist, such as pumpkin spice or chocolate creme.
- If you like extra crunch, add chopped nuts alongside the Oreos.
- To make these bars more festive, drizzle melted white chocolate over the top after baking.
Storage
Store the cake bars in an airtight container at room temperature for up to 3 days. For longer storage, keep them in the refrigerator for up to a week. To reheat, warm them briefly in the microwave for about 10-15 seconds, or enjoy them cold—they’re delicious either way.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use a different cake mix flavor?
Yes! While French vanilla provides a nice base, you can swap in yellow or even chocolate cake mix to customize the flavor to your liking.
Do I need to chill the bars before cutting?
It’s best to let the bars cool completely at room temperature before cutting to help them hold their shape and prevent crumbling.
PrintEasy Halloween Oreo Cake Bars Recipe
These Easy Halloween Oreo Cake Bars are a fun and festive dessert perfect for Halloween parties. Combining moist French vanilla cake batter with crunchy chopped Halloween Oreos and colorful sprinkles, these bars offer a delightful texture and playful look. Quick to prepare and baked to golden perfection, they make a spooky and delicious treat that kids and adults will love.
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Total Time: 40 minutes
- Yield: 12–16 bars 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
Cake Batter
- 2 boxes French Vanilla Cake Mix
- 1/2 cup Whole Milk
- 1/2 cup Vegetable Oil
- 2 Large Eggs
- 1/2 cup Halloween Sprinkles
Mix-ins and Topping
- 1 package (1 lb. 4 oz) Halloween Oreo cookies, coarsely chopped, divided
- 1/2 cup Halloween Sprinkles
Instructions
- Preheat Oven and Prepare Pan: Preheat your oven to 350°F (175°C). Line a 9×13-inch baking dish with parchment paper to ensure easy removal of the bars after baking.
- Mix Cake Batter: In a large mixing bowl, combine the two boxes of French vanilla cake mix, 1/2 cup whole milk, 1/2 cup vegetable oil, and 2 large eggs. Use an electric mixer to beat the mixture until fully incorporated. The batter will be quite thick.
- Add Sprinkles: Stir in 1/2 cup of Halloween sprinkles into the batter to add color and festive texture throughout.
- Layer Oreos in Pan: Spread half of the coarsely chopped Halloween Oreos evenly on the bottom of the prepared baking dish to create a crunchy base layer.
- Add Batter over Oreos: Carefully spoon the thick batter over the chopped Oreos in the pan. Use an offset spatula sprayed with nonstick spray to gently smooth and spread the batter evenly until it fills the pan.
- Top with Sprinkles and Oreos: Sprinkle the remaining Halloween sprinkles evenly over the batter. Then, add the remaining chopped Oreos on top and gently press them into the batter with your fingers or spatula.
- Bake Bars: Place the baking dish in the oven and bake for 20 to 25 minutes, or until a toothpick inserted into the center comes out clean, indicating the bars are fully cooked.
- Cool and Serve: Allow the cake bars to cool completely in the pan on a wire rack before lifting them out using the parchment paper and slicing into squares for serving.
Notes
- Be sure to use parchment paper to line the pan for easy removal and cleaner slicing.
- You can substitute Halloween Oreos with regular Oreos if you can’t find seasonal ones.
- Press the top Oreos gently to avoid crushing the bars but ensure they stick well.
- Store leftover bars in an airtight container at room temperature for up to 3 days or refrigerated for up to a week.
- For added richness, drizzle melted white chocolate over cooled bars before serving.
Keywords: Halloween Oreo cake bars, Halloween dessert, Oreo cake bars, easy cake bars, festive dessert

