Chocolate-Peanut Butter Bundt Cake

Step 1

Make the peanut butter filling: In the bowl of an electric mixer fitted with the paddle attachment, cream the peanut butter, cream cheese and brown sugar on medium speed until light and fluffy, 3 to 4 minutes.

Step 2

Add the egg and vanilla and mix on medium speed until fully incorporated. Add the flour and salt and mix on low speed to combine. Scrape the mixture into a large resealable plastic bag (or pastry bag) and set aside. (Alternatively, you can scrape the mixture into a medium bowl.) If necessary, rinse and dry the paddle attachment and bowl before proceeding.

Step 3

Make the cake: Heat the oven to 325 degrees. Lightly spray a 10-inch bundt pan with nonstick spray. Add a few spoonfuls of cocoa powder into the pan and tap it around until the pan is fully coated in cocoa.

Step 4

Place 1 cup/95 grams cocoa powder in a medium heat-safe bowl, and pour the boiling water over it. Whisk well to combine, then add the buttermilk and whisk to combine.

Step 5

In the bowl of an electric mixer fitted with a paddle attachment, cream the butter, oil and sugar on medium speed until light and fluffy, 4 to 5 minutes.

Step 6

Add the eggs one at a time, mixing on medium speed until fully incorporated and scraping the bowl between each addition. Add the vanilla and mix on low speed to combine.

Step 7

In a medium bowl, whisk the flour, baking powder, baking soda and salt to combine. Add about a third of this mixture to the mixer and mix on low speed to combine.

Step 8

Add half of the cocoa-buttermilk mixture to the mixer and mix on low speed to combine. Continue to alternate adding the dry and wet ingredients until the batter is uniformly combined.

Step 9

Pour about 2/3 of the cake batter into the prepared pan and spread into an even layer. Cut a 1-inch opening from one of the bottom corners of the bag and squeeze the peanut butter filling into the pan, making a ring in the center of the chocolate batter aiming not to touch the outer edge or inner tube of the pan. Alternatively, you can gently spoon the peanut butter mixture on top of the chocolate batter, aiming to create a ring shape.

Step 10

Pour the remaining chocolate cake batter on top of the peanut butter filling and gently spread into an even layer. Transfer the pan to the oven and bake until a toothpick or skewer inserted into the center comes out clean, about 1 hour or up to 1 hour 10 minutes.

Step 11

Cool in the pan for 10 minutes, then use a small offset spatula to gently loosen the cake at the edges and around the inner tube, and invert it onto a cooling rack to cool completely.

Step 12

Make the peanut butter glaze: Heat the cream in a small pot to a simmer. In a small heat-safe bowl, mix the peanut butter and confectioners’ sugar to combine, then add the hot cream, and mix until smooth. It should be thick but still loose enough to drizzle easily.

Step 13

Make the chocolate glaze: Heat the cream in the small pot to a simmer. Place the chocolate in a medium heat-safe bowl, then pour the hot cream over it. Stir until the mixture is totally smooth. It will be thinner than the peanut butter glaze.

Step 14

Place the cake on the cooling rack set over a baking sheet. Spoon half of the chocolate glaze over the cake, letting it drip down the sides, then spoon half of the peanut butter glaze on top. Repeat this process with the remaining glaze, and use the back of the spoon to gently swirl where the two glazes meet in a few spots. Gently remove the cake and transfer to a serving platter. Allow the glaze to set at least 15 minutes before slicing and serving.