Halloween Oreo Brownies

Posted on June 20, 2025

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Halloween Oreo Brownies

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  • Prep Time: 10 minutes
  • Cook Time: 25 minutes
  • Total Time: 35 minutes
  • Yield: 12 1x
  • Category: Dessert

Ingredients

Scale

*For the Brownies:*

  • 1 cup melted salted butter
  • 2 tbsp vegetable oil
  • 1 ¼ cup granulated sugar
  • 1 cup light brown sugar
  • 4 eggs at room temperature
  • 2 tsp vanilla extract
  • ½ tsp salt
  • 1 cup all-purpose flour
  • 1 cup cocoa powder (Ghirardelli or your preferred brand)
  • 1 cup bittersweet chocolate chips (Ghirardelli or your preferred brand)
  • 20 Oreos

*For the Frosting:*

  • ½ cup melted salted butter
  • 2 cups powdered sugar
  • 1 tsp vanilla extract
  • 23 tbsp milk at room temperature
  • â…“ cup cocoa powder

*For Garnish:*

  • 22 candy pumpkins
  • ½ cup crushed Oreos


Instructions

*For the Brownies:*

  1. Preheat the oven to 350°F and grease and line an 8×12 or 9×11 baking pan with parchment paper.
  2. In a large bowl, combine the melted butter, oil, granulated sugar, and brown sugar. Whisk until well combined.
  3. Add vanilla and eggs, beating for 30 seconds until the batter lightens.
  4. Sift in flour, cocoa powder, and salt. Mix until just combined.
  5. Gently fold in the chocolate chips.
  6. Pour half of the batter into the prepared pan, spread evenly, layer on the Oreos, and top with the remaining batter.
  7. Bake for 25–30 minutes or until the center no longer jiggles. Do not overbake for fudgy brownies.
  8. Once cooled, make the frosting.

*For the Frosting:*

  1. In a large bowl, combine melted butter, vanilla extract, and powdered sugar. Beat until smooth and creamy.
  2. Remove about â…“ cup of frosting and dye it green.
  3. To the remaining frosting, beat in cocoa powder and add milk until you reach the desired consistency.

*For Assembly:*

  1. Once the brownies are completely cooled, spread on the fudge frosting.
  2. Top with crushed Oreos.
  3. Add green frosting to a piping bag fitted with a small round tip and pipe swirled vines on top.
  4. Decorate with candy pumpkins, slice, and serve! Get ready to savor the chocolaty goodness!

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