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The Ultimate Frozen Brownie Sundaes: A Decadent Make-Ahead Dessert

A hand holding a square of a Frozen Brownie Sundae with a bite taken out.

A multi-layered frozen dessert bar, these Frozen Brownie Sundaes start with a rich, dark chocolate brownie base studded with chocolate chips and toffee candy bars. This is topped with a layer of dulce de leche or caramel ice cream, followed by a smooth milk chocolate ganache layer. The entire dessert is frozen solid, then cut into squares and served with a fresh, homemade strawberry sauce.

Ingredients

Scale
  • Brownie layer:
  • Vegetable oil cooking spray
  • 2 tablespoons water
  • 1/4 cup vegetable oil
  • 1 large egg, at room temperature
  • 1 3/4 cups brownie mix (recommended: Duncan Hines Dark Chocolate Fudge)
  • 1/2 cup semisweet chocolate chips
  • 2 (1.4-ounce) milk chocolate-toffee candy bars, coarsely chopped (e.g., Heath or Skor)
  • Ice cream layer:
  • 1 pint dulche de leche or caramel ice cream (recommended: Haagen-Dazs), softened
  • Chocolate layer:
  • 1/3 cup heavy whipping cream
  • 1 3/4 cups milk chocolate chips
  • Sauce:
  • 1 (12-ounce) bag frozen strawberries, thawed
  • 1/3 cup powdered sugar
  • 1 teaspoon fresh lemon juice

Instructions

  1. Make the Brownie Layer:
  2. Preheat the oven to 350 degrees F. Spray an 8-by-8-inch glass baking pan with cooking spray, line it with parchment paper leaving a 2-inch overhang on the sides, and spray the parchment paper.
  3. In a large bowl, mix together the water, oil, and egg. Add the brownie mix and stir until blended.
  4. Stir in the semisweet chocolate chips and chopped candy bar pieces.
  5. Transfer the batter to the prepared pan and spread evenly. Bake for 20 to 25 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
  6. Let the brownie layer cool completely in the pan, for about 1 1/2 hours.
  7. Add the Ice Cream Layer:
  8. Using a spatula, spread the softened ice cream evenly on top of the cooled brownie layer.
  9. Freeze until the ice cream is firm, about 4 hours or overnight.
  10. Add the Chocolate Layer:
  11. In a small saucepan, heat the heavy cream over medium-low heat until hot but not boiling.
  12. Remove the pan from the heat, add the milk chocolate chips, and stir until the chocolate has melted and the mixture is smooth.
  13. Spread the chocolate mixture over the frozen ice cream layer. Freeze for at least 1 hour or until ready to serve.
  14. Make the Strawberry Sauce:
  15. Combine the thawed strawberries, powdered sugar, and lemon juice in a blender and blend until smooth.
  16. To Serve:
  17. Use the parchment paper overhang to lift the dessert from the pan. Peel away the parchment paper.
  18. Cut into squares and drizzle with the strawberry sauce before serving.

Notes

  • Using a brownie mix and store-bought ice cream makes this recipe easier and quicker to assemble.
  • Allowing the brownie layer to cool completely is crucial to prevent the ice cream from melting.
  • The parchment paper overhang acts as handles to easily lift the finished dessert out of the pan.

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