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Oreo Layered Halloween Brownies

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These Oreo Layered Halloween Brownies are rich, fudgy, and perfectly festive with layers of chocolate brownie, creamy frosting, and crunchy Oreos. Topped with candy decorations, they’re ideal for Halloween parties or spooky gatherings.

  • Author: Sophia
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 1 hour 45 minutes
  • Yield: 16–24 bars
  • Category: Dessert
  • Method: Baked
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

  • 1 cup (227 g) unsalted butter, melted
  • 2 tablespoons vegetable oil
  • 1¼ cups granulated sugar
  • ½ cup packed light brown sugar
  • 4 large eggs, room temperature
  • 2 teaspoons vanilla extract
  • ½ teaspoon salt
  • 1 cup (125 g) all-purpose flour
  • 1 cup (100 g) cocoa powder
  • 1 cup (170 g) semisweet chocolate chips
  • 20 Oreo cookies (or Halloween-themed Oreos)
  • Crushed Oreo pieces (reserved from some of the cookies)
  • ½ cup (113 g) butter, melted
  • 2 cups (240 g) powdered sugar
  • 1 teaspoon vanilla extract
  • 2 to 3 tablespoons milk (adjust for consistency)
  • Optional: food coloring (orange, green)
  • Optional: additional crushed Oreos for topping
  • Optional: candy pumpkins or candy eyes for decoration

Instructions

  1. Preheat oven to 350°F (175°C). Grease and line a 9×9-inch or 8×12-inch baking pan with parchment paper, leaving an overhang for easy removal.
  2. In a large bowl, whisk together melted butter, vegetable oil, granulated sugar, and brown sugar until smooth.
  3. Add eggs one at a time, whisking after each addition. Stir in vanilla extract.
  4. Sift in flour, cocoa powder, and salt. Gently fold until just combined, then fold in chocolate chips.
  5. Spread half of the brownie batter into the prepared pan.
  6. Arrange Oreo cookies in a single layer over the batter.
  7. Pour the remaining brownie batter over the Oreos and smooth the top.
  8. Bake for 25–30 minutes, until the center is set but slightly fudgy. Cool completely in the pan.
  9. Meanwhile, make the frosting: whisk melted butter, powdered sugar, and vanilla until smooth. Add milk gradually until spreadable. Add food coloring if desired.
  10. Spread frosting evenly over cooled brownies. Top with crushed Oreos and candy decorations.
  11. Use the parchment overhang to lift brownies from the pan. Slice into bars or squares to serve.

Notes

  • Do not overmix the batter to maintain fudgy texture.
  • For cleaner cuts, chill the brownies before slicing.
  • Swap regular Oreos for seasonal flavors for variety.
  • Use colored candy melts or sprinkles for extra Halloween flair.
  • Store in an airtight container at room temperature for 3 days or in the fridge for up to 5 days.
  • Freeze up to 2 months; thaw in the fridge overnight before serving.

Nutrition

Find it online: https://savorymomskitchen.com/oreo-layered-halloween-brownies/