This triple chocolate cake layers a moist cocoa sponge, melted chocolate chips, and a glossy dark chocolate ganache into a dessert for serious chocolate fans. The batter mixes in one bowl, and the boiling water makes the crumb tender and deeply chocolatey.
Two 9 inch layers bake until a toothpick comes out clean, then cool completely before the ganache goes on. Poured while warm, the ganache drips down the sides and sets into a soft shine. A slice is rich, so a small piece with cold milk or coffee goes a long way.
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Why This Triple Chocolate Cake Recipe Works
Boiling water blooms the cocoa powder, which releases deeper chocolate flavor and creates a thin batter that bakes up moist. This is why the batter looks loose before baking.
Using oil instead of butter keeps the cake soft for days, even after refrigeration. Whole milk and eggs add richness, and baking soda with baking powder gives a reliable rise.
Chocolate shows up in three forms: cocoa in the sponge, semisweet chips folded into the batter, and dark chocolate in the ganache. Each adds its own texture and flavor.
Ingredients for Triple Chocolate Cake
- 1 1/2 cups all purpose flour
- 1 1/2 cups granulated sugar
- 3/4 cup unsweetened cocoa powder
- 1 1/2 tsp baking soda
- 1 tsp baking powder
- 1/2 tsp salt
- 2 large eggs
- 1 cup whole milk
- 1/2 cup vegetable oil
- 2 tsp vanilla extract
- 1 cup boiling water
- 1 cup semisweet chocolate chips
- 8 oz dark chocolate, chopped
- 1 cup heavy cream
Cocoa powder. Unsweetened cocoa gives the sponge its dark color. Sift it with the flour to prevent lumps.
Baking soda and baking powder. The two work together for lift. Check that both are fresh by stirring a pinch into hot water and watching for bubbles.
Eggs and milk. Room temperature eggs and milk blend into a smooth batter that bakes evenly.
Vegetable oil. Oil keeps the cake tender for days and does not firm up in the refrigerator like butter.
Chocolate chips and dark chocolate. Semisweet chips add soft pockets of chocolate inside, and chopped dark chocolate melts into the ganache for a glossy finish.
How to Make Triple Chocolate Cake
1. Prepare the pans. Heat the oven to 350 degrees F, then grease two 9 inch round cake pans and dust them with flour.
2. Whisk the dry ingredients. In a large bowl, whisk the flour, sugar, cocoa, baking soda, baking powder, and salt until evenly combined.
3. Add the wet ingredients. Add the eggs, milk, oil, and vanilla and mix until the batter is smooth.
4. Stir in the hot water. Pour in the boiling water and stir until combined. The batter will be thin.
5. Fold in the chips. Fold in the chocolate chips until they are evenly distributed.
6. Fill the pans. Divide the batter evenly between the two pans.
7. Bake the layers. Bake for 30 to 35 minutes, until a toothpick inserted in the center comes out clean.
8. Cool the cakes. Cool in the pans for 10 minutes, then turn onto wire racks and cool completely, about 1 hour.
9. Make the ganache. Heat the heavy cream until it just simmers, pour it over the chopped dark chocolate, wait 5 minutes, then stir until smooth.
10. Assemble the cake. Place one layer on a plate, spread some ganache on top, set the second layer on it, and pour the remaining ganache over the whole cake.
How to Serve Triple Chocolate Cake
Let the ganache set for 20 minutes, then slice with a hot knife wiped dry between cuts. Serve with cold milk, coffee, or a scoop of ice cream. This cake sits well beside creamy chocolate buttercream frosting if you want extra on the side, a cup of dark chocolate mousse, or a lighter lemon layer cake and moist vanilla cake on the same dessert table.
How to Store and Reheat Triple Chocolate Cake
Cover the cake and keep it at room temperature for up to 2 days. Because the ganache contains cream, refrigerate it after that for up to 4 days. Let slices sit at room temperature for 20 minutes to soften before serving. To freeze, wrap unglazed layers tightly and freeze for up to 3 months, then thaw overnight and add the ganache fresh. There is no need to reheat; a few seconds in the microwave softens a cold slice.
Tips and Variations for Triple Chocolate Cake
Use room temperature eggs. Cold eggs can make the batter lumpy, so set them out 30 minutes before mixing.
Measure flour correctly. Spoon flour into the cup and level it, since packed flour makes a dry cake.
Do not skip the boiling water. It blooms the cocoa and makes the cake moist.
Test for doneness. A toothpick should come out clean or with a few moist crumbs, but not wet batter.
Cool completely. Warm cake melts the ganache and makes it slide off.
Chop the chocolate finely. Small pieces melt evenly into the cream without lumps.
Skip the raw batter. Do not taste the batter, since it contains raw eggs and uncooked flour.
Store cake safely. Cakes with cream based ganache should stay cold after the first day, so check the Texas AgriLife Extension food safety guide for safe handling tips.
Frequently Asked Questions About Triple Chocolate Cake
How do I keep triple chocolate cake moist?
Use oil, do not overbake, and cover the cake as soon as it cools. The boiling water in the batter also helps lock in moisture.
Can I make triple chocolate cake ahead of time?
Yes. Bake the layers a day ahead, wrap them, and add the ganache on the day you serve.
How do I make triple chocolate cake without a mixer?
The batter is mixed by hand with a whisk and a spoon, so no mixer is needed at any step.
Can I use a 9×13 pan?
Yes. Bake it as a single sheet for 30 to 35 minutes and pour the ganache over the top.
Why is the batter so thin?
The boiling water thins the batter on purpose. It bakes into a moist, tender cake.
Triple Chocolate Cake with Dark Chocolate Ganache
Equipment
- Two 9 inch round cake pans
- Large mixing bowl
- Whisk
- Wire rack
- Small saucepan
- Serrated knife
Ingredients
Main Ingredients
- 1 ½ cup all purpose flour
- 1 ½ cup granulated sugar
- ¾ cup unsweetened cocoa powder
- 1 ½ tsp baking soda
- 1 tsp baking powder
- ½ tsp salt
- 2 large eggs room temperature
- 1 cup whole milk
- ½ cup vegetable oil
- 2 tsp vanilla extract
- 1 cup boiling water
- 1 cup semisweet chocolate chips
- 8 oz dark chocolate chopped, for the ganache
- 1 cup heavy cream for the ganache
Instructions
Cooking
- Batter. Heat the oven to 350 degrees F and grease two 9 inch round pans. Whisk the dry ingredients, then mix in the eggs, milk, oil, and vanilla.
- Thin and fold. Stir in the boiling water, then fold in the chocolate chips. The batter will be thin.
- Bake. Divide between the pans and bake 30 to 35 minutes, until a toothpick comes out clean.
- Cool. Cool in the pans for 10 minutes, then cool completely on wire racks.
- Ganache. Pour simmering cream over the chopped dark chocolate, wait 5 minutes, and stir smooth.
- Assemble. Stack the layers with ganache between them and pour the rest over the top. Let set 20 minutes.
