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Irresistible Spooky Monster Mash Brownie Cookie Bars

monster mash brownie cookie bars - featured image
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A fun and festive Halloween treat combining a gooey brownie base with soft cookie dough chunks and spooky monster-themed sprinkles, perfect for parties and cozy nights.

Ingredients

Scale
  • 1/2 cup (115g) unsalted butter, melted
  • 1 cup (200g) granulated sugar
  • 2 large eggs, room temperature
  • 1 teaspoon pure vanilla extract
  • 1/3 cup (35g) unsweetened cocoa powder
  • 1/2 cup (65g) all-purpose flour
  • 1/4 teaspoon salt
  • 1/4 teaspoon baking powder
  • 1/4 cup (57g) unsalted butter, softened
  • 1/4 cup (50g) brown sugar, packed
  • 1/2 teaspoon vanilla extract
  • 1/2 cup (60g) all-purpose flour
  • 1/8 teaspoon salt
  • 1/4 cup (45g) mini chocolate chips
  • 1/4 cup (45g) semi-sweet chocolate chips
  • 2 tablespoons festive monster sprinkles or candy eyes

Instructions

  1. Preheat your oven to 350°F (175°C). Grease or line a 9×9 inch baking pan with parchment paper, leaving some overhang for easy lifting.
  2. In a large bowl, whisk together the melted butter and granulated sugar until smooth and glossy, about 2 minutes.
  3. Add the eggs one at a time, beating well after each addition. Stir in the vanilla extract.
  4. Sift together the cocoa powder, flour, salt, and baking powder in a separate bowl. Gradually fold the dry ingredients into the wet mixture using a rubber spatula until just combined.
  5. Pour the brownie batter evenly into the prepared baking pan and spread gently with a spatula.
  6. In a medium bowl, cream together the softened butter and brown sugar until light and fluffy, about 2-3 minutes. Stir in the vanilla extract.
  7. Add the flour and salt to the butter mixture and stir until just combined. Fold in the mini chocolate chips.
  8. Drop spoonfuls of cookie dough evenly over the brownie batter without covering the entire surface.
  9. Sprinkle the semi-sweet chocolate chips and monster sprinkles or candy eyes on top.
  10. Bake for 25-30 minutes, starting to check at 25 minutes by inserting a toothpick near the center; a few moist crumbs should cling but no raw batter.
  11. Cool completely in the pan on a wire rack. Use the parchment overhang to lift the bars out and cut into 16 squares.

Notes

Do not overbake to keep gooey texture. Chill cookie dough if too sticky before layering. Use parchment paper for easy removal. Oven thermometer recommended for consistent baking temperature. Variations include gluten-free flour blend, vegan butter and flax eggs, adding espresso powder or nuts, and baking in muffin tins for individual servings.

Nutrition

Keywords: Halloween, brownie bars, cookie bars, monster sprinkles, spooky treats, easy dessert, chocolate, party dessert

Find it online: https://tessierecipes.com/irresistible-spooky-monster-mash-brownie-cookie-bars-recipe-easy-halloween-treats/