01 -
Preheat oven to 350°F and grease three 8-inch cake pans with cooking spray, then line bottoms with parchment paper.
02 -
In a large bowl, sift together flour, cocoa powder, baking powder, baking soda, salt, and granulated sugar until well blended.
03 -
Add eggs, buttermilk, vegetable oil, and vanilla extract to dry ingredients and mix just until nearly combined.
04 -
Slowly pour in hot coffee and gently mix until batter is smooth and free of lumps, allowing cocoa flavors to bloom.
05 -
Divide batter evenly among prepared pans using a scale for accuracy and bake for 25 to 30 minutes, or until a toothpick inserted in center comes out clean.
06 -
Remove pans from oven and cool on wire rack for 10 minutes, then invert layers to cool completely before frosting.
07 -
In a bowl, beat butter until creamy. Gradually add powdered sugar, cocoa powder, heavy cream, vanilla, and salt. Beat until light and fluffy. Fold in chilled caramel sauce and mix until smooth.
08 -
Place a dab of frosting on serving plate. Layer first cake layer, pipe a frosting ring on edge, fill center with caramel sauce. Repeat for each layer. Coat entire cake with remaining frosting.
09 -
Chill cake slightly to set frosting, then slice and serve at room temperature or chilled to best showcase flavors.