Name: Orange Poppy Seed Cake with Mascarpone Buttercream Recipe
Prep time: 20 min
Cook time: 30 min
Total time: 2 h 30 min
Cuisine: American
Ingredients: 2 1/4 cups all-purpose flour; 2 1/4 tsp baking powder; 1/2 tsp salt; 2 Tbsp poppy seeds; 3/4 cup unsalted butter (room temperature); 1 1/2 cup granulated sugar; 1 1/2 Tbsp orange zest (from 1-2 large oranges); 3 large eggs (room temperature); 1 tsp vanilla extract; 3/4 cup milk (room temperature); 1/4 cup orange juice (fresh squeezed, from 1/2 a large orange); 1/2 cup granulated sugar; 1/2 cup orange juice (fresh squeezed, from one large orange); 1 1/2 cups unsalted butter (room temperature); 8 oz mascarpone cheese (softened but slightly chilled, 250g container); 4 cups powdered sugar (sifted); 1 tsp vanilla extract; Orange slices; Orange leaves; Poppy seeds

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If you are searching for a cake that delivers a vibrant burst of citrus alongside a delightful crunch and a silky-smooth frosting, the Orange Poppy Seed Cake with Mascarpone Buttercream Recipe is an absolute must-try. This cake brings together the zing of fresh oranges and the unique texture of poppy seeds in a tender crumb, while the mascarpone buttercream adds a luscious creaminess that elevates every bite. Whether you’re baking for a special occasion or simply craving a luscious treat, this recipe offers the perfect balance of freshness, sweetness, and elegance to impress any crowd.

Ingredients You’ll Need

A two-layer yellow cake with small black seeds inside is shown on a white cake stand with a wooden base. Each cake layer is separated by a thick white cream layer, and the outside is thinly covered with the same white cream, letting the cake texture show through. On top, there is a round orange slice and two green leaves as decoration. The background and surface are white with a marbled texture, and there is a light blue cloth and a fresh orange with green leaves placed near the stand. Photo taken with an iphone --ar 4:5 --v 7

This cake uses simple, everyday ingredients that each play a crucial role in building the flavor, texture, and appearance you’ll love. From the zesty orange elements brightening the batter to the poppy seeds adding tiny bursts of crunch, plus the rich mascarpone mixed into the buttercream for that unbeatable creaminess, every item here is necessary for the perfect outcome.

All-purpose flour (2 1/4 cups): The sturdy base that gives our cake structure and crumb.
Baking powder (2 1/4 tsp): Helps the cake rise beautifully and stay fluffy.
Salt (1/2 tsp): Balances sweetness and enhances all the flavors.
Poppy seeds (2 Tbsp): Adds a subtle crunch and nutty flavor throughout the cake.
Unsalted butter (3/4 cup for cake, 1 1/2 cups for frosting): Provides richness and moisture to both the cake and frosting.
Granulated sugar (1 1/2 cups for cake, 1/2 cup for syrup): Sweetens the cake and creates the orange simple syrup to keep it moist.
Orange zest (1 1/2 Tbsp): Packs a fragrant citrus punch that enhances the fresh orange flavor.
Eggs (3 large): Bind the ingredients while adding tenderness.
Vanilla extract (1 tsp): Adds warmth and depth to both cake and frosting.
Milk (3/4 cup): Keeps the cake moist and tender.
Orange juice (total 3/4 cup): Imparts natural sweetness and acidity to the batter and syrup.
Mascarpone cheese (8 oz): Creates a creamy, luxurious frosting that is less sweet but full of flavor.
Powdered sugar (4 cups): Sweetens and thickens the buttercream.
Orange slices, orange leaves, and extra poppy seeds (optional): For beautiful and fresh cake decoration.

How to Make Orange Poppy Seed Cake with Mascarpone Buttercream Recipe

Step 1: Prepare Your Pan and Dry Ingredients

First, preheat your oven to 350°F and prepare two 8-inch cake rounds by greasing, flouring, and lining them with parchment paper. Then, whisk together your flour, baking powder, poppy seeds, and salt in a medium bowl. This keeps your leavening evenly distributed and the poppy seeds ready to sprinkle throughout the batter.

Step 2: Cream Butter, Sugar, and Orange Zest

Using a stand mixer fitted with the paddle attachment, beat your room temperature butter, granulated sugar, and fresh orange zest together on medium-high speed until the mixture turns pale and fluffy—about 3 minutes. This step is critical as it incorporates air that will help keep the cake light and airy.

Step 3: Incorporate Eggs and Vanilla

Reduce your mixer speed and add eggs one at a time, fully mixing each before adding the next. This slow integration ensures your batter doesn’t curdle. Once all eggs are in, add the vanilla extract and mix just to combine.

Step 4: Alternate Adding Dry Ingredients and Liquids

Begin adding the flour mixture in three additions, alternating with milk and orange juice in two additions (milk and juice combined). Always start and end with the flour mixture to maintain the batter’s consistency. Mix after each addition just until incorporated to avoid overmixing.

Step 5: Bake the Cake Layers

Divide the batter evenly between your prepared pans and bake for 25 to 30 minutes. You’ll know the cakes are ready when a toothpick inserted into the centers comes out mostly clean with just a few moist crumbs. Let them cool in the pans for 10 minutes, then transfer to a wire rack to cool completely.

Step 6: Make the Orange Simple Syrup

In a small pot, combine the half cup of fresh orange juice and 1/2 cup granulated sugar. Heat over medium-high, stirring until the sugar dissolves and the mixture boils. Cook for 1 minute more to thicken slightly, then remove from heat and let cool. This syrup will add juicy sweetness and keep your cake moist during assembly.

Step 7: Whip Up the Mascarpone Buttercream

Beat 1 1/2 cups room temperature butter until smooth and creamy. Gradually add the sifted powdered sugar in 1/2 cup increments, beating on medium-high speed after each addition. Once fully combined, add the vanilla extract and beat for an additional 5 minutes. Lastly, fold in the mascarpone cheese, mixing just until smooth—take care not to overbeat or it may become runny.

Step 8: Assemble Your Cake

Place one cooled cake layer on your serving plate and generously brush on 2 to 3 tablespoons of the orange simple syrup. Spread about 1 cup of the mascarpone buttercream evenly over the top. Repeat with the second layer, then apply a thin crumb coat to the entire cake. Chill for 20 minutes to set the crumb coat. Once chilled, you may frost fully or leave the cake ‘naked’ for a rustic look.

How to Serve Orange Poppy Seed Cake with Mascarpone Buttercream Recipe

The image shows a two-layer cake on a white cake stand with a wooden base, placed on a white marbled surface. The cake has two thick light brown layers with visible small black specks, separated by a thick white creamy layer in the middle and topped with a thick white creamy layer. On top of the cake, there is a thin slice of orange and a few green leaves for decoration. A fresh orange with green leaves is placed to the right on the white marbled surface, and a soft blue cloth is blurred in the background. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

Fresh orange slices, bright orange leaves, and a sprinkle of poppy seeds make gorgeous, natural garnishes. They bring a fresh, colorful touch that hints at the flavors inside while adding an elegant finishing flair perfect for entertaining or just brightening up your dessert table.

Side Dishes

This cake pairs beautifully with light and vibrant sides such as fresh berries, a lemon sorbet, or even a dollop of whipped cream. These options complement the citrus profile without overwhelming the palate, making each bite feel like a perfectly balanced treat.

Creative Ways to Present

Try serving the cake as mini layered cupcakes using the same batter and frosting for an adorable party treat. You can also layer it in clear glasses for an orange poppy seed parfait style dessert, alternating cake with frosting and garnishes for a stunning presentation.

Make Ahead and Storage

Storing Leftovers

Keep your leftover cake covered in an airtight container or tightly wrapped in plastic wrap to prevent drying out. Stored in the refrigerator, it will stay fresh and moist for about 3 to 4 days.

Freezing

You can freeze both the unfrosted cake layers and the buttercream separately. Wrap layers tightly in plastic wrap and then foil before freezing. Buttercream can be stored in an airtight container. When ready to use, thaw in the fridge overnight and bring to room temperature before frosting.

Reheating

This cake is best enjoyed chilled or at room temperature, so reheating isn’t recommended. However, if you prefer your cake warm, gently microwave a slice for about 10-15 seconds, but be careful not to melt the frosting.

FAQs

Can I use bottled orange juice instead of fresh?

Freshly squeezed orange juice is preferred for its vibrant flavor and natural sweetness, which really shines in this recipe. If using bottled juice, aim for one without preservatives and consider adjusting sugar to taste.

What if I don’t have mascarpone cheese?

Mascarpone lends a unique creaminess to the buttercream. If unavailable, you can substitute with cream cheese, but the frosting will have a tangier taste. Adjust the sugar slightly if needed.

How do I prevent poppy seeds from sinking to the bottom?

Mix the poppy seeds with a small amount of flour before folding into the batter. This helps suspend them more evenly to prevent sinking during baking.

Can I make this cake gluten-free?

Yes, but you’ll need to use a gluten-free all-purpose flour blend that includes xanthan gum or another binder. Baking times may vary slightly, so watch the cake closely.

Is the cake suitable for freezing after it’s fully frosted?

Freezing a fully frosted cake can sometimes cause texture changes in the frosting. It’s better to freeze the layers unfrosted and apply fresh buttercream after thawing for best results.

Final Thoughts

The Orange Poppy Seed Cake with Mascarpone Buttercream Recipe is a shining example of how simple ingredients combine to create something truly spectacular. Whether it’s the burst of citrus, the unexpected crunch, or that smooth, dreamy frosting, this cake promises to be your new go-to for celebrations or cozy afternoons. Trust me, once you bake and taste it, you’ll understand why it’s a favorite worth sharing!