Go Back
- 1 cup all-purpose flour - 1/2 cup unsweetened cocoa powder - 1 tsp baking powder - 1/2 tsp baking soda - 1/4 tsp salt - 1/2 cup unsalted butter, softened - 3/4 cup granulated sugar - 2 large eggs - 1 tsp vanilla extract - 1/2 cup buttermilk - 1 cup fresh raspberries (plus extra for garnish) - 1 cup heavy cream - 4 oz dark chocolate (at least 70% cocoa), chopped - 2 tbsp powdered sugar - Fresh mint leaves for garnish The base of our cake is all-purpose flour. It gives structure and softness. Cocoa powder adds rich chocolate flavor. Baking powder and baking soda help the cake rise. Salt balances the sweetness. Unsalted butter adds creaminess and flavor. Granulated sugar sweetens the cake and helps it brown. Eggs bind everything and add moisture. Vanilla extract enhances the flavor of the cake. Buttermilk makes the cake tender and adds a slight tang. Fresh raspberries bring a burst of flavor and color. Heavy cream is key for the mousse, giving it a light texture. Dark chocolate adds deep flavor and richness. Powdered sugar sweetens the mousse without making it gritty. Mint leaves add a fresh touch when serving. If you need a flour substitute, try almond flour or gluten-free flour. For cocoa powder, carob powder works well. Baking soda can be replaced with baking powder, but adjust the amount. Unsalted butter can be swapped with coconut oil or margarine. Granulated sugar can be replaced with brown sugar or honey. Eggs can be replaced with flax eggs or applesauce for a vegan option. For buttermilk, mix milk with vinegar or lemon juice. If you want a lighter mousse, use whipped coconut cream instead of heavy cream. Any dark chocolate works, but aim for at least 70% cocoa for the best taste. {{ingredient_image_1}} Start by preheating your oven to 350°F (175°C). This helps the cake rise well. While the oven heats, grab an 8-inch round cake pan. Grease it with butter and dust it with flour. This step prevents the cake from sticking. Make sure to cover the entire surface. You want a smooth release when it’s time to serve. In a medium bowl, combine your dry ingredients. Whisk together 1 cup of flour, 1/2 cup of cocoa powder, 1 tsp of baking powder, 1/2 tsp of baking soda, and 1/4 tsp of salt. This mix adds flavor and structure to your cake. In a larger bowl, beat 1/2 cup of softened butter and 3/4 cup of sugar. Mix until it’s light and fluffy. This usually takes about 3-5 minutes. Next, add 2 large eggs, one at a time. Make sure to mix well after each one. Then, add 1 tsp of vanilla extract for extra flavor. Now, alternate adding the dry mix and 1/2 cup of buttermilk. Start and end with the dry mix. Stir until just combined; don’t overmix. Finally, gently fold in 1 cup of fresh raspberries. This adds a burst of tartness to the sweet cake. Pour the batter into your prepared cake pan. Smooth the top with a spatula. Bake for 25-30 minutes. To check if it’s done, insert a toothpick into the center. If it comes out clean, it’s ready. Let the cake cool in the pan for about 10 minutes. After that, turn it out onto a wire rack. This cooling step helps the cake maintain its shape. Allow it to cool completely before adding the mousse. To make the best chocolate mousse, start with high-quality dark chocolate. Use at least 70% cocoa for rich flavor. Melt it gently in a double boiler or microwave. Let it cool slightly before adding it to whipped cream. Whipping the cream to soft peaks is key. Don’t overwhip, or it may become grainy. When folding the chocolate into the cream, be gentle. This keeps the mousse light and fluffy. Decoration makes your cake shine! After chilling, smooth the mousse for a clean finish. Use a spatula for even coverage on the top and sides. Add fresh raspberries on top for a pop of color. Mint leaves also add a nice touch. You can sprinkle cocoa powder or chocolate shavings for extra flair. These details make your cake look professional and inviting. Watch out for a few common errors. First, don’t skip cooling the cake completely. A warm cake can melt the mousse. Second, avoid overmixing the batter. This can make the cake dense. Lastly, be careful not to overwhip the cream. Keeping it light ensures a smooth mousse. Following these tips will help you create a stunning raspberry chocolate mousse cake every time. Pro Tips Use Room Temperature Ingredients: For the best texture, ensure your butter, eggs, and buttermilk are at room temperature before mixing. This helps them incorporate better into the batter. Don’t Overmix: When combining the wet and dry ingredients, mix just until combined. Overmixing can lead to a dense cake instead of a light and fluffy one. Quality Chocolate Matters: Use high-quality dark chocolate for the mousse. The flavor of the chocolate will significantly impact the overall taste of your cake. Chill Before Serving: Allow the cake to chill for at least 2 hours after assembling. This helps the mousse to set properly and enhances the flavors. {{image_2}} You can change the flavors in this cake. Try adding orange zest for a fresh twist. You could also use mint extract instead of vanilla. For a nutty taste, mix in some finely chopped hazelnuts or almonds. This adds a nice crunch too. If you love coffee, add some espresso powder to the batter. It pairs well with chocolate and enhances its flavor. To make this cake vegan, replace the eggs with flax eggs. Mix one tablespoon of ground flaxseed with three tablespoons of water. Let it sit for five minutes to thicken before adding it to the batter. Use coconut oil instead of butter. For the cream, you can use coconut cream or a dairy-free whipped topping. This way, you can enjoy a rich mousse without dairy. For a gluten-free option, swap the all-purpose flour with a gluten-free blend. Make sure it has xanthan gum, as it helps with the cake's structure. Check that the cocoa powder is gluten-free too. This will keep the cake soft and tasty. You won't lose any flavor or texture with these changes. Enjoy a delightful treat that everyone can share! After you enjoy your raspberry chocolate mousse cake, store leftovers in the fridge. Place the cake in an airtight container. This keeps the mousse fresh and tasty. If you don’t have a container, cover it with plastic wrap. It will last up to three days in the fridge. Make sure to keep it away from strong-smelling foods. You can freeze the cake for longer storage. First, let the cake cool completely. Then slice it if you want single servings. Wrap each slice in plastic wrap tightly. Place the wrapped slices in a freezer bag. This way, you can grab a piece anytime! The cake stays good for up to three months in the freezer. When ready to eat, thaw it in the fridge overnight. Reheating is simple but needs care. For small slices, take one out and let it sit at room temperature for about 20 minutes. This helps it warm up gently. If you want to use a microwave, heat it for just a few seconds. Be careful not to overheat, or the mousse will melt. Enjoy your cake slightly warm for a delightful treat! To make the cake less sweet, cut back on sugar. Try using 1/2 cup of sugar instead of 3/4 cup. You can also add more cocoa powder. This adds rich flavor without the extra sweetness. Lastly, pair the cake with tart raspberries. The tartness balances the sweetness well. Yes, you can use frozen raspberries. Make sure to thaw and drain them first. This helps avoid extra moisture in the batter. They may be softer than fresh raspberries, but they still taste great. Just fold gently into the batter to keep the cake light. The mousse needs to chill for at least 2 hours. This time helps it firm up nicely. If you can wait longer, it's even better! A longer chill allows the flavors to blend well. Just keep it covered in the fridge to stay fresh. This blog post covered how to make a great cake. We discussed ingredients, steps, and common mistakes. You learned how to perfect chocolate mousse and explore different flavors. I shared tips on storing leftovers and reheating. In the end, baking is fun and easy with a few key tricks. Use this guide to create your dessert masterpiece. Enjoy making lasting memories as you bake!

Raspberry Chocolate Mousse Cake

A rich and decadent chocolate cake layered with raspberry and chocolate mousse.
Prep Time 30 minutes
Cook Time 30 minutes
Total Time 3 hours
Course Dessert
Cuisine American
Servings 8
Calories 350 kcal

Ingredients
  

  • 1 cup all-purpose flour
  • 0.5 cup unsweetened cocoa powder
  • 1 tsp baking powder
  • 0.5 tsp baking soda
  • 0.25 tsp salt
  • 0.5 cup unsalted butter, softened
  • 0.75 cup granulated sugar
  • 2 large eggs
  • 1 tsp vanilla extract
  • 0.5 cup buttermilk
  • 1 cup fresh raspberries (plus extra for garnish)
  • 1 cup heavy cream
  • 4 oz dark chocolate (at least 70% cocoa), chopped
  • 2 tbsp powdered sugar
  • to taste fresh mint leaves for garnish

Instructions
 

  • Preheat your oven to 350°F (175°C). Grease and flour an 8-inch round cake pan.
  • In a medium bowl, whisk together flour, cocoa powder, baking powder, baking soda, and salt. Set aside.
  • In a large bowl, beat the softened butter and granulated sugar until light and fluffy, about 3-5 minutes.
  • Add the eggs one at a time, mixing well after each addition. Mix in the vanilla extract.
  • Gradually add the dry ingredients to the butter mixture, alternating with buttermilk, starting and ending with the dry ingredients. Mix until just combined.
  • Gently fold in the fresh raspberries into the batter.
  • Pour the batter into the prepared cake pan and smooth the top. Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean. Let it cool in the pan for 10 minutes, then turn it out onto a wire rack to cool completely.
  • While the cake is cooling, melt the dark chocolate in a double boiler or microwave until smooth. Allow it to cool slightly.
  • In a separate bowl, whip the heavy cream and powdered sugar until soft peaks form.
  • Fold the melted chocolate into the whipped cream until fully combined and smooth. Be careful not to deflate the whipped cream.
  • Once the cake is completely cooled, slice the cake into two layers horizontally. Spread half of the chocolate mousse on the bottom layer, then place the top layer back on. Spread the remaining mousse over the top and sides of the cake.
  • Refrigerate the cake for at least 2 hours to let the mousse set.
  • Before serving, garnish with fresh raspberries and mint leaves.

Notes

Chill the cake for at least 2 hours before serving for best results.
Keyword cake, chocolate, mousse, raspberry