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Ultimate Millionaire Brownies: Decadent Layered Dessert

Two stacked squares of decadent millionaire brownies showing the rich chocolate base, gooey caramel layer, and chocolate topping.

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Make rich, three-layer Millionaire Brownies featuring a fudgy base, a chewy caramel center, and a smooth chocolate topping. This recipe provides simple steps for a gourmet brownie bar.

Ingredients

Scale
  • 1 cup (2 sticks) unsalted butter, softened
  • 1 1/4 cups granulated sugar
  • 1 cup packed light brown sugar
  • 4 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • 3/4 cup unsweetened cocoa powder
  • 1/2 teaspoon salt
  • 1/4 teaspoon baking powder
  • 1 cup semi-sweet chocolate chips (for brownie layer)
  • 1 (14 ounce) can sweetened condensed milk
  • 1/2 cup (1 stick) unsalted butter
  • 1 cup packed light brown sugar
  • 1 teaspoon vanilla extract
  • 1/4 teaspoon salt
  • 1 1/2 cups semi-sweet chocolate chips (for topping)
  • 2 tablespoons heavy cream

Instructions

  1. Preheat your oven to 350°F (175°C). Line a 9×13 inch baking pan with parchment paper, leaving an overhang for easy removal.
  2. Prepare the brownie layer: In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy. Beat in the eggs one at a time, then stir in the vanilla extract.
  3. In a separate bowl, whisk together the flour, cocoa powder, salt, and baking powder. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Fold in the 1 cup of chocolate chips.
  4. Spread the brownie batter evenly into the prepared pan. Bake for 25 to 30 minutes, or until a toothpick inserted near the center comes out with moist crumbs attached. Let cool completely.
  5. Prepare the caramel layer: In a medium saucepan, combine the sweetened condensed milk, 1/2 cup butter, 1 cup brown sugar, vanilla extract, and salt.
  6. Cook the caramel mixture over medium heat, stirring constantly, until the sugar dissolves and the mixture begins to bubble. Reduce heat to low and continue to cook, stirring frequently, for 5 to 7 minutes until the mixture thickens slightly and turns a light golden brown. Do not overcook, or it will become hard.
  7. Pour the warm caramel evenly over the cooled brownie layer. Place the pan in the refrigerator for at least 1 hour, or until the caramel is firm to the touch.
  8. Prepare the chocolate topping: Place the 1 1/2 cups of chocolate chips in a heatproof bowl. Heat the heavy cream in a small saucepan until it just begins to simmer. Pour the hot cream over the chocolate chips. Let stand for 5 minutes, then whisk until smooth and glossy.
  9. Pour the chocolate ganache over the chilled caramel layer and spread evenly.
  10. Refrigerate the Millionaire Brownies for at least 2 hours, or until the chocolate topping is set. Lift the slab out of the pan using the parchment paper overhang, slice into squares, and serve.

Notes

  • For a chewier brownie base, slightly underbake the layer by 2-3 minutes.
  • If your caramel seems too soft after chilling, you can briefly place the pan under the broiler for 30 seconds to set it faster, watching carefully to prevent burning.
  • Store leftover squares in an airtight container in the refrigerator for up to one week.

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