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These Oreo Layered Halloween Brownies are a showstopper for any spooky celebration or just when you want that extra sugary comfort. You get gooey chocolate brownies, a playful layer of orange filled Oreos, and a bright orange frosting that screams Halloween. Every slice is festive, fun, and totally irresistible for adults and kids alike.
I first baked these brownies for a neighborhood gathering and there was not a crumb left by the end. People kept coming back for the festive orange layer and that iconic cookies and cream crunch.
Ingredients
- Brownie mix: you get a reliable, fudgy base leading to perfect results every time choose a quality brand for better flavor
- Eggs: help bind everything for stability in the bars fresh eggs give a richer taste
- Oil: keeps the brownies moist use a neutral oil like vegetable or canola
- Milk: adds extra softness avoid fat free for the best texture
- Oreo cookies with orange filling: gives the bars that Halloween look and cookies and cream flavor look for ones with vibrant orange centers
- Milk chocolate frosting: brings a sweet, creamy finish store bought makes things simple
- White or vanilla frosting: serves as the base for your orange Halloween topping go for a thick texture that spreads easily
- Orange food coloring gel: helps boost the orange theme gel gives a rich color without thinning the frosting
Instructions
- Preheat the Oven:
- Set your oven to 350 degrees Fahrenheit each oven is slightly different so make sure to fully preheat for even baking. Line a 9 by 9 inch square pan with parchment paper letting some overhang for easy removal.
- Mix the Brownie Batter:
- Combine the brownie mix eggs oil and milk in a large bowl. Whisk or beat with a hand mixer until completely smooth with no dry pockets. Mixing just until combined keeps the brownies tender.
- Add Oreos and Bake:
- Pour the batter into your prepared pan. Arrange Oreo cookies across the top gently pressing each cookie partway into the batter so they peek out but are not fully submerged. Slide the pan into the oven and bake for 25 to 30 minutes depending on your oven until a toothpick in the center comes out with only a few moist crumbs.
- Cool Completely:
- Let the brownies cool in the pan on a wire rack. This keeps the Oreo layer intact and prevents your frosting from melting later. Waiting until fully cool is key for sharp slices and pretty layers.
- Make the Orange Frosting:
- Scoop the white or vanilla frosting into a bowl. Scrape the orange centers from about 10 Oreos and stir them into the frosting. Add a teaspoon of orange food coloring gel and mix until vivid and evenly colored.
- Add and Set the Orange Frosting:
- Spread your homemade orange frosting smoothly over the cooled brownies with an offset spatula or butter knife. Chill the pan in the fridge for 30 minutes so the frosting firms and keeps its shape.
- Finish with Chocolate Frosting and Oreos:
- Once set carefully spread a layer of milk chocolate frosting on top. Crush your remaining Oreos and sprinkle them over for extra crunch and color.
- Slice and Serve:
- Lift brownies out of pan using the parchment then cut into neat squares about three inches by two inches for generous party pieces. Wipe your knife between cuts for clean layers and serve on a festive platter.
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Every year my kids beg to scrape the orange Oreo filling for the frosting and that is now our official October tradition. Something about the smell of chocolate and the bright color gets us all in a Halloween mood by the time the first batch cools.
Storage Tips
Store leftover brownies in an airtight container at room temperature for up to two days or pop in the fridge for up to four days. For longer storage cut and wrap individual pieces then freeze for up to a month. Defrost overnight at room temperature for best flavor.
Ingredient Substitutions
You can use homemade brownie batter if you love from scratch baking. For a non dairy version swap in a non dairy milk and use plant based frosting and cookies. If you cannot find orange filled Oreos use regular ones then add extra food coloring to the frosting for that same pop of color.
Serving Suggestions
These brownies are perfect on a Halloween dessert tray alongside candy and cupcakes. For an even more decadent treat serve with a scoop of vanilla ice cream or drizzle with extra chocolate sauce. Kids love them as an after school surprise in October.
Cultural Context
Oreos are iconic in American sweets and combining them with brownies creates the sort of over the top treat that perfectly fits the Halloween spirit. Bright colors and fun layers make these special for holiday gatherings and bake sales.
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Serve these brownies at your next Halloween gathering for rave reviews. The colorful layers and cookie crunch will delight everyone at the table.