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Test Kitchen Approved

Stack-of-Mud Bars

Time: 5 hours 15 minutes

Yield: 8 servings

About

These aren't like those mud pies you'd make out back in the yard when you were a kid! No, Stack-of-Mud Bars are a very decadent, more mature (and edible) version. Starting with a sweet graham cracker crust, you'll be quite pleased with the layers of fudgy, Nutella®-infused brownie, rich chocolate pudding, and fluffy whipped cream that follow. It's everything your little mind once hoped your pretend pies would be and more. Stack-of-Mud Bars help the older you realize that delicious dreams really do come true!

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Ingredients

  • For the crust:
  • 15 graham crackers
  • 1 stick unsalted butter, melted
  • 3 tablespoons granulated sugar
  • For the brownie layer:
  • 1 1/4 cups Nutella
  • 2 large eggs, room temperature
  • 1/2 cup all-purpose flour
  • 1 (3.1-ounce) bar chocolate-hazelnut, such as Ferrero Rocher®, chopped
  • For the chocolate pudding:
  • 1 cup granulated sugar
  • 3 tablespoons cornstarch
  • 1/4 cup cocoa powder
  • 1/2 teaspoon kosher salt
  • 2 1/2 cups half-and-half
  • 4 large egg yolks
  • 2 tablespoons unsalted butter
  • 4 ounces bittersweet or milk chocolate, chopped
  • 1 teaspoon pure vanilla extract
  • For the whipped cream:
  • 1 pint heavy whipping cream
  • 2 tablespoons confectioners' sugar
  • 1 teaspoon pure vanilla extract
  • cocoa powder, to taste, for garnish
  • chocolate chip cookies, optional, to taste, store-bought or homemade, crushed into crumbs, for garnish

Directions

Step 1 -Adjust an oven rack to the center position, then preheat the oven to 325 degrees F.

Step 2 -Line the bottom of a 9-inch springform pan with parchment paper.

Step 3 -Add the graham crackers to a food processor and pulse until crumbs form.

Step 4 -In a bowl, add the graham cracker crumbs, then stir in 1 stick of the melted butter and 3 tablespoons of the granulated sugar.

Step 5 -Firmly press the crust mixture into the bottom of the prepared pan, bringing it up about 1 inch along the sides.

Step 6 -Bake the crust for 10 minutes, then transfer the pan to a wire rack and let it cool completely.

Step 7 -Increase the oven temperature to 350 degrees F.

Step 8 -Pour the Nutella into a small, microwave-safe bowl and microwave in 30-second intervals until the consistency is sauce-like.

Step 9 -In a large bowl, add the Nutella, then whisk in the large eggs, 1 at a time.

Step 10 -Add the flour to the Nutella mixture and stir to combine.

Step 11 -Let the Nutella mixture cool slightly.

Step 12 -Fold the chopped chocolate-hazelnut bar into the Nutella mixture.

Step 13 -Pour the brownie batter into the prepared pie crust and bake, about 20-25 minutes.

Step 14 -While the brownies are baking, in a medium saucepan, add the remaining granulated sugar, the cornstarch, 1/4 cup of the cocoa powder, and the salt and whisk to combine.

Step 15 -Add the half-and-half and the egg yolks to the pudding mixture and whisk to combine. Cook over medium heat, whisking constantly, until it has thickened and is pudding-like, about 10-12 minutes.

Step 16 -Transfer the saucepan from the heat and stir in the remaining butter, the chopped bittersweet chocolate, and 1 teaspoon of the vanilla extract.

Step 17 -Let the pudding cool.

Step 18 -Spread the cooled pudding into an even layer over the brownie.

Step 19 -Place plastic wrap directly over the surface of the pudding layer and refrigerate until it is chilled all the way through, for at least 4 hours and up to overnight.

Step 20 -In a large bowl, add the heavy whipping cream, the confectioners' sugar, and the remaining vanilla extract and beat with an electric hand mixer until soft peaks form.

Step 21 -Discard the plastic wrap and spread the whipped cream in an even layer over the pudding layer.

Step 22 -Sprinkle the bars dusted with the remaining cocoa powder and sprinkled with the chocolate chip cookie crumbs, then transfer it from the springform pan.

Step 23 -Cut the bars into squares and serve.

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