Chocolate Peanut Butter Cup Galaxy Cake – MarraTrips

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This Galaxy Peanut Butter Chocolate Cake is an indulgent treat that’s as beautiful as it is delicious. With layers of moist chocolate cake, creamy peanut butter frosting, and a galaxy-inspired swirl of colors, it’s perfect for special occasions or anytime you want to impress with a cosmic masterpiece. Plus, the added crunch of peanut butter cups makes each bite out-of-this-world delicious.

Ingredients

Cake Layers

  • 200g dark chocolate: Chopped for a deep, rich chocolate flavor.
  • 200g peanut butter cups: Chopped to add pockets of creamy, nutty sweetness.
  • 1½ cups flour: Provides the structure for the cake.
  • ½ cup cocoa powder: Enhances the chocolate flavor with a bittersweet touch.
  • 1 tsp baking powder: Helps the cake rise evenly.
  • 1 tsp baking soda: Works with the buttermilk for a tender crumb.
  • ½ tsp salt: Balances the sweetness.
  • 1 cup sugar: Adds sweetness to the cake batter.
  • ½ cup vegetable oil: Keeps the cake moist and tender.
  • 2 eggs: Adds structure and richness to the cake.
  • 1 tsp vanilla extract: Enhances the overall flavor.
  • 1 cup buttermilk: Provides moisture and a slight tanginess to balance the sweetness.
  • ½ cup hot water: Ensures the batter is smooth and easy to mix.

Frosting and Decoration

  • 100g cream cheese: Softened for a creamy and tangy base.
  • ½ cup peanut butter: Adds nutty flavor to the frosting.
  • 2 cups powdered sugar: Sweetens and thickens the frosting.
  • ½ cup heavy cream: Creates a fluffy, spreadable consistency.
  • Food coloring (optional): For the galaxy effect.
  • Extra peanut butter cups: To decorate the cake.

Instructions

Step 1: Prepare the Cake Batter

  1. Preheat the oven to 350°F (180°C). Grease and line two cake pans with parchment paper.
  2. In a large bowl, sift together the flour, cocoa powder, baking powder, baking soda, and salt. Set aside.
  3. In another bowl, whisk together the sugar, vegetable oil, eggs, and vanilla extract until well combined.
  4. Gradually add the dry ingredients to the wet mixture, mixing just until incorporated.
  5. Stir in the buttermilk, followed by the hot water, until the batter is smooth.

Step 2: Bake the Cake

  1. Divide the batter evenly between the prepared cake pans.
  2. Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
  3. Remove the cakes from the oven and allow them to cool in the pans for 10 minutes. Then transfer them to a wire rack to cool completely.

Step 3: Make the Frosting

  1. In a large mixing bowl, beat the softened cream cheese and peanut butter together until smooth and creamy.
  2. Gradually add the powdered sugar, mixing well after each addition.
  3. Pour in the heavy cream and beat the mixture until light and fluffy.

Step 4: Assemble the Cake

  1. Place one cooled cake layer on a serving plate or cake stand. Spread a layer of frosting on top, then sprinkle with chopped peanut butter cups.
  2. Place the second cake layer on top and spread a thin layer of frosting (crumb coat) over the entire cake. Chill the cake for 15 minutes to set the crumb coat.

Step 5: Create the Galaxy Effect

  1. Divide the remaining frosting into separate bowls and add a few drops of food coloring to each bowl to create different colors (e.g., purple, blue, and black).
  2. Dollop the colored frostings onto the cake and use an offset spatula to swirl the colors together, creating a galaxy-like pattern.

Step 6: Decorate and Serve

  1. Add extra chopped peanut butter cups on top for garnish. For an extra cosmic touch, sprinkle edible glitter over the frosting.
  2. Slice and serve the cake immediately, or store it in the refrigerator until ready to serve.

Cooking Tips

  1. Room Temperature Ingredients: Ensure all your ingredients, especially the eggs, cream cheese, and buttermilk, are at room temperature. This helps the batter and frosting mix more evenly.
  2. Hot Water in Batter: Adding hot water ensures a smoother batter and enhances the cocoa flavor.
  3. Crumb Coat: Applying a thin crumb coat before the final frosting layer ensures a clean and polished finish.
  4. Frosting Consistency: If the frosting is too thick, add a splash of heavy cream. If it’s too thin, add more powdered sugar.
  5. Galaxy Swirl: Don’t overmix the colored frostings when swirling, as this will muddy the colors.

Substitutions and Variations

  1. Peanut Butter Cups: Substitute with your favorite chocolate candy, such as chocolate chips, mini peanut butter bars, or caramel-filled chocolates.
  2. Vegetable Oil: Use melted coconut oil or light olive oil for a different flavor profile.
  3. Buttermilk: Replace with a mixture of 1 cup plant-based milk and 1 tablespoon vinegar or lemon juice for a dairy-free option.
  4. Food Coloring: If you prefer natural colors, use beet powder, butterfly pea powder, or activated charcoal.
  5. Dark Chocolate: Swap with milk chocolate or semi-sweet chocolate, depending on your taste preferences.

Frequently Asked Questions

Can I make the cake layers ahead of time?

Yes, you can bake the cake layers a day in advance. Wrap them tightly in plastic wrap and store them at room temperature. Frost and assemble the cake the next day.

How do I store leftover cake?

Store any leftover cake in an airtight container in the refrigerator for up to three days. Allow it to come to room temperature before serving for the best texture and flavor.

Can I freeze the cake?

Yes, you can freeze the assembled cake or individual slices. Wrap tightly in plastic wrap and foil, then freeze for up to one month. Thaw in the refrigerator overnight before serving.

Can I use natural peanut butter?

Yes, natural peanut butter works well, but ensure it’s stirred thoroughly to incorporate the oils before using it in the frosting.

What’s the best way to create a smooth galaxy effect?

Use an offset spatula and light, sweeping motions to swirl the colors. Avoid pressing too hard, which can blend the colors too much.

Nutritional Information (Per Serving)

  • Calories: 450
  • Protein: 6g
  • Carbohydrates: 55g
  • Fat: 24g
  • Fiber: 3g
  • Sugar: 40g
  • Sodium: 240mg

Conclusion

The Galaxy Peanut Butter Chocolate Cake is a show-stopping dessert that combines the rich flavors of chocolate and peanut butter with the visual appeal of a galaxy swirl. It’s perfect for birthdays, parties, or any celebration where you want to dazzle your guests. With simple ingredients and straightforward instructions, this cake is both easy to make and unforgettable to serve. Give it a try, and let the cosmos inspire your next baking adventure!

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