Decadent Chocolate Peanut Butter Layer Cake

1. Make the chocolate cake:
   • Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
   • In a large bowl, whisk together flour, sugar, cocoa powder, baking powder, baking soda, and salt.
   • Add the eggs, milk, oil, and vanilla extract to the dry ingredients. Beat on medium speed for about 2 minutes until smooth.
   • Gradually add the boiling water (or hot coffee) to the batter, mixing until smooth. The batter will be thin.
   • Pour the batter evenly into the prepared cake pans.
   • Bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
   • Allow the cakes to cool in the pans for 10 minutes, then transfer to wire racks to cool completely.
2. Make the peanut butter frosting:
   • In a large bowl, beat the softened butter and peanut butter together on medium speed until creamy and smooth.
   • Gradually add the powdered sugar, one cup at a time, mixing well between additions.
   • Add the milk, vanilla extract, and a pinch of salt. Mix until smooth and fluffy, adjusting the milk to reach your desired consistency.
3. Make the chocolate ganache (optional):
   • In a small saucepan, heat the heavy cream over medium heat until it begins to simmer.
   • Remove from heat and add the chopped chocolate. Stir until the chocolate is completely melted and smooth.
   • If desired, add the butter and stir until the ganache is glossy and shiny.
   • Let it cool slightly before using.
4. Assemble the cake:
   • Once the cakes are completely cool, slice each cake layer in half horizontally to create four layers (optional, for extra decadence).
   • Place the first layer of cake on a serving plate. Spread a generous layer of peanut butter frosting on top.
   • Add the second cake layer and repeat with more frosting.
   • Continue layering with the remaining cake layers, finishing with the last layer of cake on top.
   • Frost the entire cake with the remaining peanut butter frosting.
5. Top with chocolate ganache (optional):
   • Pour the chocolate ganache over the top of the cake, allowing it to drip down the sides for a dramatic effect.
   • Optionally, sprinkle chopped peanuts or chocolate shavings on top for added texture and flavor.

Allow the cake to set for about 20-30 minutes so the frosting and ganache firm up before slicing. Enjoy the delicious layers of chocolate cake, creamy peanut butter frosting, and decadent ganache with every bite! 🍫🥜🍰