Quadruple Chocolate Birthday Cake is the chocolate lover’s dream: rich, deeply flavored, and not overly sweet. This recipe is a household favorite and is perfect for birthdays and large gatherings.

Quadruple Chocolate Birthday Cake

This recipe yields a large amount of cake—enough for a three-layer, 8-inch cake plus about two dozen regular cupcakes and several jumbo cupcakes if you want extras. It’s ideal for a big celebration or for sharing at school or work. Be prepared: there will likely be leftovers, and that’s a very good thing.

I kept the decoration simple because I’m not a skilled cake decorator. Despite that, the finished cake looks special enough for guests. The flavor combination is straightforward and intense: chocolate Ovaltine in the batter and frosting, milk chocolate ganache, and extra chocolate decorations for texture and visual appeal.

To add a number or design on top, I used a butter knife to form a shallow depression in the frosting, chilled the cake to set, then filled the depression with ganache and added sprinkles. I didn’t do a formal crumb coat for this cake since it handled well, but if your layers are crumbly, a thin crumb coat will help get a smoother finish.

For cupcakes I piped frosting using a large star tip, then drizzled ganache and sprinkled them for a quick, attractive finish.

Why You’ll Love This Recipe

Intense chocolate flavor — cocoa powder, chocolate Ovaltine, melted milk chocolate, and ganache combine for layered chocolate depth.
Great for birthdays — a classic layer cake format that dresses up well for celebrations.
Soft, tender crumb — oil and sour cream keep the cake moist and soft for days.
Makes enough for a crowd — three 8-inch layers plus cupcakes from the same batter.
Flexible decoration — keep it simple with sprinkles or add candies and piped frosting for a bolder look.
Make-ahead friendly — you can bake layers and prepare frosting and ganache in advance for easier assembly the day of.

Recipe Shopping List

Here’s a consolidated list of what you’ll need to make the recipe. For exact amounts, refer to the ingredient list in the recipe card below.

Most items are pantry staples or common baking supplies — making this cake from scratch is worth the effort.

All-purpose flour
Salt
Baking powder
Baking soda
Unsweetened cocoa powder
Chocolate Ovaltine (or malted milk powder)
Granulated sugar
Canola or neutral vegetable oil
Strong hot coffee
Sour cream
Half-and-half (or whole milk plus a splash of cream)
Large eggs
Vanilla extract
Unsalted butter (or salted, adjust salt as needed)
Powdered sugar
Heavy cream
Milk chocolate chips (or semi-sweet if you prefer less sweetness)
Chocolate sprinkles and caramel-filled chocolate chips for decoration
Baking spray, parchment circles, and cupcake liners

How To Make This Recipe (Overview)

This overview shows the main steps. Use the detailed recipe card below when you bake.

Mix the dry and wet ingredients: Sift the dry ingredients together. In a mixer, combine oil, hot coffee, half-and-half, and sour cream; gradually add the dry mix, then the vanilla and eggs until just combined.
Prepare pans and bake: Spray three 8-inch pans and line with parchment. Fill pans about two-thirds full. Cupcakes use the extra batter. Bake until a toothpick comes out clean.
Cool completely: Let cakes and cupcakes cool in their pans briefly, then transfer to a wire rack and cool completely before frosting.
Make frosting and ganache: Beat butter smooth, add sifted cocoa and powdered sugar, and incorporate the dissolved Ovaltine with heavy cream until light and fluffy. For ganache, heat cream and butter, pour over chocolate chips, and stir until glossy.
Assemble and decorate: Whip most of the ganache for the filling, spread between layers, frost the exterior, chill briefly, then pour the remaining ganache over the top and edges. Add sprinkles and chips. Pipe frosting on cupcakes and drizzle ganache.

Recipe FAQ

How do I store this cake?

Store the assembled or cut cake covered in the refrigerator if your kitchen is warm or if the ganache is soft. For best texture and flavor, let slices sit at room temperature for 20–30 minutes before serving. Cupcakes store the same way in an airtight container.

How do I serve leftovers?

This cake is best at room temperature. If chilled, let it sit at room temperature for 20–30 minutes to soften the frosting and ganache. You can warm a single slice in the microwave for a few seconds if desired, but be careful not to melt the frosting.

Can I make this ahead?

Yes. Bake the layers a day ahead and wrap them tightly once cooled. Frosting and ganache can be prepared in advance and brought back to a spreadable texture before assembling. You can also assemble the cake the day before and keep it chilled.

Can I make cupcakes instead?

Absolutely. The batter works well for cupcakes. Fill liners about two-thirds full and bake until a toothpick inserted into the center comes out clean (about 13–15 minutes, but ovens vary).

Can I make ingredient swaps?

Yes. Use another neutral oil if you prefer, substitute whole milk plus a little cream for half-and-half, or swap semi-sweet chocolate for milk chocolate chips to reduce sweetness. If you use salted butter, reduce or omit added salt in the frosting.

2026 update: I used to include more family stories in older posts. I’ve removed most of those from my archive to keep things focused, but I’m keeping one here because it’s a fond memory. The child in these photos has grown up — he’s 18 now, working full time — and I’m saving this memory for posterity (and the occasional teasing about that toothless smile). If you just want the recipe, skip ahead to the card below.

We recently wrapped up our last birthday party of the summer, which also coincided with the start of the school year. The house is much quieter now that the kids are back in class — a nice change that allowed me to get more done. Quiet days are rare in a house full of boys.

This cake was the perfect treat for our chocolate-loving birthday kid. Seven is a great age — a sweet time of curiosity and growth. Happy birthday to my third son; I hope the year ahead brings learning and joy.

Recipe Card — Quadruple Chocolate Birthday Cake

Yield: 12 servings

Prep time: 40 minutes | Cook time: 30 minutes | Total time: ~1 hour 10 minutes

Ingredients

Cake

4 cups all-purpose flour
2 teaspoons salt
2 teaspoons baking powder
4 teaspoons baking soda
1 1/2 cups unsweetened cocoa powder
2/3 cup chocolate Ovaltine
4 cups granulated sugar
2 cups canola oil
2 cups strong, hot coffee
1 cup sour cream
1 cup half-and-half
4 large eggs
2 tablespoons vanilla extract

Icing

2 1/4 cups unsalted butter
1 1/2 cups cocoa powder
1 teaspoon salt (omit if using salted butter)
6 cups powdered sugar
1 1/2 tablespoons vanilla
1 1/2 cups heavy cream
1 cup Ovaltine

Ganache

2 cups milk chocolate chips
1 cup heavy cream
2 tablespoons butter
1 tablespoon + 1 teaspoon vanilla

Decorations

Chocolate sprinkles
Caramel-filled chocolate chips

Instructions

Cake

Sift together the flour, salt, baking powder, baking soda, cocoa powder, and Ovaltine. Set aside.
In a mixer bowl, combine canola oil, hot coffee, half-and-half, and sour cream. Mix on low for about 30 seconds.
Slowly add the dry ingredients to the wet mixture on low speed until just combined. Add vanilla, then add eggs one at a time, mixing until just incorporated.
Prepare three 8-inch cake pans by spraying with baking spray and lining the bottoms with parchment circles. If making cupcakes, line tins with paper liners and lightly spray.
Fill pans and cupcake liners about two-thirds full. Bake cupcakes at 350°F for 13–15 minutes or until a toothpick comes out clean. Bake cake layers at 350°F for about 25–30 minutes, using the toothpick test to confirm doneness.
Let cakes and cupcakes cool in the pans for about 15 minutes, then transfer to wire racks to cool completely before frosting.

Frosting

Beat room-temperature butter until smooth.
Sift in cocoa powder and powdered sugar, mixing to avoid lumps. Add vanilla and stir.
In a separate bowl, dissolve Ovaltine in heavy cream. Slowly add this mixture to the butter and sugar, then beat on high 1–2 minutes until the frosting lightens and becomes fluffy. Scrape the bowl as needed.

Ganache

Heat heavy cream and butter until almost boiling. Pour over chocolate chips in a heatproof bowl and stir until smooth. Add vanilla and combine.
Cool the ganache slightly and whip about two-thirds of it until fluffy for the layer filling. Leave the remaining third at room temperature for drizzling.

Decorating

Spread whipped ganache between the cake layers. Frost the outside of the cake with the Ovaltine buttercream. If adding a number or design, press a shallow depression in the top of the frosting and chill the cake for 30–40 minutes to set.
Place chocolate chips evenly around the cake edge if desired. Drizzle the remaining ganache over the top and edges so it drips slightly down the sides. Fill any depression with ganache and smooth with a toothpick where needed. Add sprinkles and caramel-filled chocolate chips. Pipe frosting onto cupcakes, drizzle ganache, and finish with sprinkles.

Nutrition (estimate)

Yield: 24 | Serving size: 1

Nutrition estimates are approximate. Consult a trusted source for precise dietary tracking.