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Sourdough Chocolate Cake with Chocolate Cream Cheese Frosting

A moist, intensely chocolate cake slathered in maybe the best frosting known to man, you will want to keep sourdough starter at all times for this recipe alone!!
Prep Time 3 hrs
Cook Time 40 mins
Total Time 3 hrs 40 mins
Course Dessert
Servings 24 people (max)


Sourdough Chocolate Cake

  • 1 cup discard sourdough starter
  • 1 cup whole milk
  • 2 cups all-purpose flour
  • cup white sugar
  • 1 cup vegetable oil
  • 2 tsp vanilla bean paste or extract
  • 1 tsp salt
  • tsp baking soda
  • ¾ cup Non-Dutch Process Cocoa Powder
  • 2 eggs

Chocolate Cream Cheese Frosting

  • 6 oz. cream cheese; at room temperature
  • 2 cups confectioners sugar
  • ¼ cup cocoa powder
  • 1 tsp vanilla bean paste or extract
  • pinch salt


Sourdough Cake

  • In a large mixing bowl (not your stand mixer bowl), combine the milk, sourdough starter, and flour. Stir until all the flour has been moistened, but don't worry about getting out every single lump. Cover the bowl with plastic wrap or a dishtowel and allow to sit for 2 hours.
  • After the 2 hours is up, preheat your oven to 350°F and generously grease a 9 x 13" baking sheet, then line the bottom with parchment paper for easy release.
  • In your stand mixer or another large bowl, mix the sugar, oil, vanilla, salt, baking soda, and cocoa powder until combined. Add the eggs one at a time, scraping down the bottom and sides of the bowl after each addition.
  • Add the sourdough mixture to the bowl and beat on low speed until it's totally combined into the batter. It's very sticky, so it does help to stop the mixer and scrape everything down a few times to make sure everything is incorporated.
  • Pour the batter into your prepared pan and bake for 30-40 minutes. You'll know it's done when the top is very shiny, and only slightly bounces back when pushed with your finger. Run a knife or spatula around the sides and allow to cool completely in the pan before frosting or removing from the pan.

Chocolate Cream Cheese Frosting

  • In the bowl of your stand mixer, beat together the cream cheese and confectioners sugar until fluffy, about 2 minutes.
  • Add in the cocoa powder, vanilla, and salt, and whip until smooth and evenly combined.
  • Frost the cake as desired- you could leave the cake in the pan and just frost the top, or your could flip the cake out onto a sheet tray and frost all sides. Top with sprinkles, candles, or whatever you want! Now eat up!! YUM!
Keyword cake, chocolate, cream cheese, frosting, sourdough, sprinkles