Ingredients
Method
- Preheat oven to 350°F and grease a 9x13-inch baking pan. Whisk flour, sugar, cocoa, baking soda, baking powder, and salt. In another bowl, whisk buttermilk, oil, eggs, and vanilla. Combine wet and dry, then stir in hot coffee. Pour into pan and bake 28-32 minutes until a toothpick comes out with moist crumbs. Cool 10 minutes.
- Poke holes all over the warm cake using a wooden spoon handle. Mix sweetened condensed milk and peanut butter until smooth, then pour over the cake, letting it seep into the holes. Cool to room temperature, then chill 30 minutes.
- Place chocolate chips in a bowl. Heat cream until simmering, pour over chocolate, let sit 2 minutes, then whisk smooth. Spread ganache over the chilled cake and immediately top with chopped peanuts.
- Refrigerate the cake at least 2 hours until ganache is set. Slice and serve chilled.
Notes
The 2-hour chill time is not included in the prep or cook time. For the cleanest slices, run a sharp knife under hot water, wipe it dry, and cut straight down without sawing. Leftovers keep in the fridge for up to 5 days—the cake stays moist the whole time.
