One-Bowl Pumpkin Chocolate Swirl Bundt Cake with Ganache

Prep: 20 min12 servingsmedium
One-Bowl Pumpkin Chocolate Swirl Bundt Cake with Ganache

A moist spiced pumpkin cake with ribbons of rich chocolate batter baked in a fluted tube pan and topped with silky chocolate ganache. This impressive dessert combines the warm flavors of pumpkin pie spice with decadent chocolate in an easy one-bowl method. Perfect for fall gatherings, holiday dinners, or whenever you want a show-stopping cake that looks complicated but comes together quickly using a cake mix base.

Ingredients

12 servings
  • 1 box Betty Crocker Delights Super Moist Spice Cake Mix
    homemade spice cakerecipe dependentfrom-scratch

    more control over ingredients

    Full guide →
  • 1 cup canned pumpkin, not pumpkin pie mix
  • ½ cup water
  • cup vegetable oil
    melted butter1:1indulgentadds dairy

    richer flavor

    Full guide →
  • 4 eggs
  • ½ teaspoon pumpkin pie spice
  • cup semisweet baking chocolate, chopped
  • 2 tablespoons unsweetened baking cocoa
  • ¼ cup heavy whipping cream
  • ½ cup semisweet baking chocolate, chopped

Instructions

  1. 1

    Heat oven and generously spray fluted tube cake pan

  2. 2

    Beat cake mix, pumpkin, water, oil, eggs and pumpkin pie spice on low speed for 1 minute scraping constantly

  3. 3

    Increase speed to medium and beat for 2 minutes

  4. 4

    Pour 1 cup batter into measuring cup and stir in chopped chocolate and cocoa until combined

  5. 5

    Pour half the pumpkin batter into pan, spoon chocolate batter over it, then top with remaining pumpkin batter

  6. 6

    Bake until toothpick inserted in center comes out clean

  7. 7

    Cool for 15 minutes then turn upside down onto rack or serving plate and remove pan

  8. 8

    Cool completely then place on serving plate

  9. 9

    Microwave cream until just beginning to simmer

  10. 10

    Add chopped chocolate to cream and stir until smooth

  11. 11

    Cool ganache for 5 minutes then drizzle over cake

Tips

Tip 1

Use a glass measuring cup for the chocolate batter portion - it makes transferring and measuring easier.

Tip 2

Don't overmix the chocolate batter - just stir until the cocoa and chocolate pieces are incorporated.

Tip 3

Let the ganache cool slightly before drizzling to prevent it from running off the cake too quickly.

Good to Know

Storage

Cover and store at room temperature for up to 3 days or refrigerate for up to 1 week

Make Ahead

Can be baked 1 day ahead and stored covered. Add ganache just before serving

Serve With

Serve at room temperature. Cut with sharp knife, wiping clean between slices

Common Mistakes

Watch

Don't overbake or the cake will be dry - check with toothpick at minimum time

Watch

Cool completely before adding ganache to prevent melting and sliding off

Substitutions

Dairy-Free Swaps

heavy cream
coconut cream1:1dairy-freedairy-free

similar richness

Full guide →

General Alternatives

vegetable oil
melted butter1:1indulgentadds dairy

richer flavor

Full guide →
cake mix
homemade spice cakerecipe dependentfrom-scratch

more control over ingredients

Full guide →
Find more substitutions →

FAQ

Can I use fresh pumpkin instead of canned?

Yes, use 1 cup of cooked and mashed fresh pumpkin. Make sure it's well-drained and smooth to avoid excess moisture in the batter.

What if I don't have a fluted tube pan?

Use a regular bundt pan or even a 9x13 inch pan, adjusting baking time as needed. Check doneness with a toothpick.

How long will this cake keep?

Store covered at room temperature for 3 days or refrigerate for up to a week. The ganache may firm up when chilled.