Rich layers of cocoa cake, fluffy sweet cream, and a glossy chocolate ganache—this grown-up take on the classic Ho Ho snack cake hits every craving. Decadent, nostalgic, and surprisingly easy to assemble, it features a tender chocolate base, dreamy cream filling, and shiny ganache for bakery-level indulgence—no lunchbox required.
Prep pans: Preheat oven to 350°F (175°C). Line two 9-inch round cake pans with parchment and grease well.
Mix dry ingredients: In a large bowl, whisk together sugar, flour, cocoa, baking powder, baking soda, and salt. Sift if needed.
Mix wet ingredients: In another bowl, whisk eggs until smooth. Stir in buttermilk, oil, sour cream, and vanilla extract.
Pour the dry mixture into the wet mixture. Stir to combine, then slowly add hot coffee and whisk until batter is smooth and thin.
Divide batter evenly between prepared pans. Bake for 25–30 minutes until a toothpick comes out with just a few moist crumbs.
Let cakes cool in pans 10 minutes, then invert onto wire racks and cool completely.
For the filling: In a small saucepan, whisk flour and milk over low heat. Cook, stirring, until thickened and bubbly like a soft paste. Scrape into a bowl, press plastic wrap directly on the surface, and cool completely.
In a large bowl, beat together sugar, butter, shortening, and salt with a mixer until very light and fluffy. Gradually add cooled flour-milk paste and beat until the mixture is light, white, and fluffy.
Assemble cake: Using a serrated knife, carefully slice each cake layer horizontally so you have four thin layers total.
Set one layer on a serving platter. Spread with a third of the cream filling. Repeat with two more cake layers and remaining filling, topping with the final layer. Refrigerate while you make ganache.
For ganache: Place chocolate in a heatproof bowl. In a saucepan, heat heavy cream until just simmering, then pour over the chocolate. Let sit 2–3 minutes, then whisk until smooth and shiny. Cool until slightly thickened but pourable.
Pour a thin layer of ganache over the chilled cake, using an offset spatula to smooth. Chill for 20 minutes, then pour on the remaining ganache for a thick glossy finish. Chill at least 30–60 minutes before slicing.
Notes
This cake is best served well-chilled for neat slices. Make-ahead friendly: assemble a day in advance if you want richer flavor and easier slicing. If desired, use all butter instead of shortening in the filling, but expect a slightly softer texture. Refrigerate leftovers up to 4 days or wrap and freeze slices for a month. For variations, see the ideas in the post including coconut or mint filling twists!