This brownie torte is rich with layers of brownie, whipped peanut butter filling, and ganache. I made this recipe in a specialty silicone pan that has the shape of a peanut butter cup, see the blog post for product link. If you don’t have the silicone pan, this dessert can easily be made in a 9-inch round springform pan.
See the recipe notes for a smaller 8x8-inch version of this torte.
Coat a 9-inch silicone pan or springform pan with flour-based baking spray
Place the chocolate and butter in a large microwave-safe mixing bowl. Heat at 100% power in a household microwave oven in 30 second intervals, until the mixture can be stirred smooth (about 1 minute 30 seconds total).
Add the sugar, brown sugar, and salt; whisk until combined. Whisk in the peanut butter, eggs and yolk, and the vanilla.
Sift the flour and cocoa powder over the mixture. Fold together until well combined. Pour the batter into the prepared pan and spread evenly. If using a silicone pan, place it on a baking sheet. Bake for 20-25 minutes, or until the brownie is well set. Cool completely in the pan on a wire rack, or speed cooling in the refrigerator, about 30 minutes.
Whipped peanut butter layer
In the bowl of an electric mixer, combine the creamy peanut butter, butter, confectioners’ sugar, and salt. Beat on high speed for 3-5 minutes, occasionally scraping down the bowl. Beat until lightened in color and fluffy. Beat in the vanilla extract.
Scoop the whipped mixture on top of the cooled brownie and spread evenly over the entire surface. If using a silicone pan, place the pan in the freezer about 30 minutes. If using a springform pan, place in the refrigerator while you prepare the butter ganache.
Butter ganache
Place the butter and chocolate in a large microwave safe bowl. Heat at 100% power in a household microwave oven in 30 second intervals, until the mixture can be whisked smooth and a shiny ganache is formed (about 1 minute 30 seconds total). Stir in the salt.
Pour the ganache over the chilled peanut butter layer and tilt the pan so that the ganache touches the edges of the pan.
If using the silicone pan, freeze the layered brownie until completely solid, about 2 hours. To unmold, gently pull the edges of the pan away from the dessert, then remove from the pan. Let it come to room temperature before serving. If using a regular springform pan, refrigerate the dessert for 2-3 hours, or until the ganache is well set. To unmold, soak a tea towel with hot water and wring out; place around the edge of the springform pan to loosen the ganache and peanut butter from the springform collar. Unclip the collar and unmold.
Garnish the torte with Maldon flake sea salt. Let the torte come to room temperature before serving.
Notes
What to expect: This is a rich dessert with three equal portions of brownie, peanut butter filing, and ganache. It is best served at room temperature, around 70°F. This softens the ganache and peanut butter layers and the flavors are more developed.The ganache layer makes this dessert very rich. If you’d like to lighten this torte, use a thinner layer of ganache.For a thinner ganache layer, halve the ingredient amounts to 1 cup semisweet chocolate and 1/2 cup of butter.To make this dessert even more indulgent, top with chopped mini peanut butter cup pieces. Smaller brownie pan batch: Make the brownie batter as directed and bake in a greased 8x8 inch square pan. Halve the whipped peanut butter filling ingredients and layer on top of the brownies. Halve the ganache recipe and layer on top of the peanut butter layer. Chill well as directed; slice and serve from the pan.