Desserts
This Austrian plum cake delivers the perfect balance of moist layers and aromatic spiced rum streusel that becomes a golden crown when baked. š The recipe combines traditional techniques like a steam bath for tender crumb and a buttery streusel topping infused with warm spices and rum, creating a dessert that feels both rustic and refined. What makes it special is how the plums release their juices during baking, keeping the cake deliciously moist without needing extra moisture.
The foundation of this cake lies in its simple yet effective method: a basic cake batter enriched with sour cream and topped with a streusel that caramelizes beautifully. The spiced rum adds depth to the streusel, while the plums provide natural sweetness and a subtle tartness that complements the buttery layers. This cake is perfect for special occasions or as a comforting treat on a chilly evening.
What youāll achieve is a cake with layers of tender crumb, pockets of juicy plums, and a crisp, fragrant streusel crown that holds together beautifully. The aroma of warm spices and rum baking in the oven will fill your kitchen, making it impossible to resist slicing into warm slices. This recipe stays true to Austrian traditions while being approachable enough for home bakers.
Serve it with a dusting of powdered sugar or a dollop of whipped cream to enhance its rustic charm. The cake keeps well for several days, allowing you to enjoy its rich flavors over time. Letās get started on creating this classic dessert thatās sure to impress.
Ingredients for austrian plum cake
Simple pantry staples meet rustic charm in this Austrian plum cake's moist layers and spiced rum crown.
| Ingredient | Amount | Notes |
|---|---|---|
| All-Purpose Flour š¾ | 3 cups | Sifted for light texture |
| Granulated Sugar š | 1 Ā½ cups | White or light brown |
| Unsalted Butter š§ | 1 cup | Cold, cubed for streusel |
| Sour Cream š„ | Ā½ cup | Full-fat for moisture |
| Large Eggs š„ | 2 whole | Room temperature |
| Vanilla Extract šÆ | 1 tbsp | Pure extract preferred |
| Baking Powder š§ | 1 Ā½ tsp | Aluminum-free preferred |
| Salt š§ | Ā½ tsp | Fine sea salt |
| Pitted Plums š | 2 cups | Fresh or frozen, halved |
| Spiced Rum š¹ | Ā½ cup | For streusel infusion |
| Ground Cinnamon šæ | 1 tbsp | For streusel warmth |
| Ground Nutmeg šæ | Ā½ tsp | Freshly grated preferred |
| Allspice š¶ļø | Ā¼ tsp | Ground for depth |
| Powdered Sugar š | Ā¼ cup | For dusting |
| Heavy Cream š„ | Ā½ cup | For steam bath |
The plums are the heart of this cakeāfresh is ideal, but frozen works in a pinch (no need to thaw). I grab Italian prunes or Damson plums from the specialty section at Whole Foods when I can, but regular grocery store plums taste just as good. The rum? Captain Morgan or Gosling's are my go-tosāthey've got that perfect spice-sweet balance. If you're avoiding alcohol, swap for extra vanilla extract and a splash of orange juice. The streusel's secret? Cold butterādon't skip chilling it before mixing, or you'll end up with a sad, greasy crumble instead of crisp golden crown.
No spiced rum? Apple cider or orange juice plus a pinch of cinnamon mimics the flavor profile. Running low on nutmeg? Mace works too, though it's harder to find. The allspice is non-negotiable for that warm, earthy depth, but if you're missing it, extra cinnamon and cardamom can cover it. For the cake batter, buttermilk substitutes (milk + vinegar) work if you don't have sour creamājust let it sit for 5 minutes first. And that powdered sugar dusting? Confectioners' sugar from the store works fine, but if you're feeling fancy, sift it through a fine-mesh sieve for that cloud-like finish.
This cake keeps beautifullyā3-4 days at room temperature wrapped in foil, or up to 5 days in the fridge. The streusel stays crisp if you store it upside down in an airtight container. Freeze for up to 3 months if you want to make it ahead, but bring it to room temp before serving. Pro tip: Slice it warmāthe juices from the plums are at their peak, soaking into every bite. Leftovers? Toasted brioche or warm croissants make perfect companions for second-day slices.
Why You'll Love This Recipe
- Iāll be real: this recipe costs me about $5 for a whole cake. All-purpose flour, butter, sugar, eggsāthese are things I already have. The sour cream adds that creamy lift without breaking the bank, and leftovers? They last five days in the fridge, wrapped in foil, tasting just as good as day one.
- No-Fuss Layers: I swear by this recipe because itās basically a cake that assembles itself. You mix the butter, sugar, and eggs until itās lightāno stand mixer requiredāand fold in the flour and sour cream like youāre making a lazy lasagna. The plums (if you use them) just get folded right in, no chopping or pitting required.
- Butter-Sugar Magic: That first bite of warm cake with the butter-sugar crust melting in your mouth? Itās the kind of thing that makes you pause mid-sip of coffee. The sour cream keeps it tender, but the butter and sugar team up to give it that rich, almost caramelized edge thatās dangerously addictive.
- Weekend or Weeknight: Between us, this cake is my go-to for brunch with friends or a last-minute dessert after dinner. Itās sturdy enough to slice and serve at room tempāno reheating neededāand the flavor only gets better the next day. Honestly, Iāve taken it to potlucks, birthday parties, and even packed slices for my kidās school bake sale.
Step-by-step instructions for Austrian plum cake
Here's how to bake this showstopper with perfect layers and that signature rum-infused streusel.
šØāš³ Step 1: Prepare the Plum Filling and Streusel Topping
Start by tossing the 2 cups pitted plums with 1 tablespoon vanilla extract and 2 tablespoons granulated sugar (set aside). For the streusel, pulse 1 cup cold cubed butter, 1 cup granulated sugar, 1 tablespoon ground cinnamon, 0.5 teaspoon ground nutmeg, and 0.25 teaspoon allspice in a food processor until pea-sized crumbs form.
In a small bowl, mix 0.5 cup spiced rum with 0.25 cup powdered sugar and stir until dissolved. Pour this mixture over the streusel crumbs and let them soak for 10 minutesāthis creates that signature rum-infused flavor. Real talk: Don't skip this soaking step, or your streusel will be dry and flavorless.
š³ Step 2: Make the Cake Layers and Fill
Preheat your oven to 350Ā°F. Sift together 3 cups all-purpose flour, 1.5 teaspoons baking powder, and 0.5 teaspoon salt in a large bowl. In another bowl, beat 2 whole eggs with 1.5 cups granulated sugar until pale and fluffy (about 3-4 minutes). Gently fold in the dry ingredients, then stir in 0.5 cup sour cream.
Divide the batter evenly between two greased and floured 9-inch round cake pans. Spread the plum mixture evenly over each layer, then bake for 20-25 minutes until a toothpick comes out clean. Let the layers cool for 10 minutes in the pans before transferring to a wire rack.
š„ Step 3: Assemble and Add Streusel Crown
Once the layers are completely cool, place one layer on a serving plate. Spread a thin layer of 0.5 cup heavy cream over it, then top with the second layer. Press gently to create a smooth surface. Here's the thingāthis cream layer is what keeps your cake moist and prevents dryness.
Sprinkle the rum-soaked streusel evenly over the top layer, pressing down lightly so it sticks. The streusel should form a beautiful crown around the edges. Bake the assembled cake at 325Ā°F for 15-20 minutes until the streusel is golden brown and crisp. Watch for that perfect caramelizationāit's worth the wait!
ā° Step 4: Cool and Serve with Confidence
Let the cake cool completely before slicingāthis ensures clean cuts and prevents crumbling. I know it's tempting to dig in right away, but patience here makes all the difference. The cake will hold together beautifully and release those gorgeous plum juices when sliced.
Serve at room temperature with a dusting of powdered sugar and a dollop of whipped cream. Each bite should deliver moist cake layers, sweet-tart plums, and that warm spiced rum flavor from the streusel. Trust me, this cake tastes even better the next day when the flavors meld together.
Pro Tips For Making Austrian Plum Cake
- CREAM THE BUTTER SLOW: Mix the softened butter and sugar until the bowl is visibly warmer to the touchāabout 5 minutes. The dough will be lighter and less dense if you push past the "fluffy" stage and actually incorporate air, not just blend. (Yes, itāll feel like overworking it, but trust the process.)
- CHILL THE DOUGH: Wrap the finished dough tightly in plastic and refrigerate for at least 2 hoursāovernight is even better. I learned this the hard way when my cake collapsed in the oven because the butter melted too fast. Cold dough = better rise and texture.
- WEIGH THE FLOUR: Use a kitchen scale for the flourā1 cup of flour isnāt always 120g, especially if you scoop it straight from the bag. Packing it lightly into the measuring cup still leaves room for error; weigh it for consistency every time.
- DONāT OVERMIX THE SOUR CREAM: Fold the sour cream into the dry ingredients gentlyājust until combined. Overmixing develops gluten, and that turns your tender plum cake into a dense brick. Think "marble swirls," not a smooth batter.
Best sauces and condiments for this austrian plum cake
Classic Vanilla Glaze
For a refined finish, whisk together Ā½ cup powdered sugar with 1-2 tablespoons heavy cream and Ā½ teaspoon vanilla extract. Drizzle over warm slices just before servingāthis adds a delicate sweetness that complements the plum's tartness. I love using NestlĆ© powdered sugar for its fine texture, which dissolves beautifully. Let the glaze set for 5 minutes before cutting to prevent a soggy cake. š„
Spiced Rum Caramel
Elevate your cake with a rich caramel drizzle by combining Ā½ cup granulated sugar with 2 tablespoons spiced rum in a saucepan. Cook over medium heat without stirring until it turns a deep amber color (about 5-7 minutes). Immediately pour over the cake while warmāit'll create a glossy, sticky finish that pairs perfectly with the rum streusel. For extra depth, add Ā½ teaspoon ground cinnamon to the caramel mixture. šÆ
Lemon Curd Swirl
Add a bright contrast to the rich plum cake with homemade lemon curd. Mix Ā½ cup lemon juice, Ā½ cup granulated sugar, 2 egg yolks, and 2 tablespoons butter in a saucepan, cooking over low heat until thickened. Spread a thin layer between cake layers or pipe decorative swirls on top before baking the streusel. The acidity cuts through the sweetness beautifully. I use ReaLemon for the most vibrant flavor. š
Whipped Cream Variations
Serve your cake with classic heavy whipped cream, but why not get creative? For a boozy twist, fold 1 tablespoon spiced rum into the whipped cream before serving. For a lighter option, mix in Ā½ teaspoon lemon zest and 1 tablespoon powdered sugar for a citrusy kick. I recommend using Land O'Lakes heavy cream for the best stability. Chill the whipped cream for 30 minutes before serving to achieve peak fluffiness. š¦
Honey-Drizzled Yogurt
Balance the richness of the cake with a dollop of Greek yogurt sweetened with 1 tablespoon honey and a pinch of ground cinnamon. The tangy yogurt complements the plum's sweetness while adding a refreshing contrast. Drizzle with an extra Ā½ teaspoon spiced rum for a sophisticated touch. This pairing works especially well if you're serving the cake to guests who prefer lighter accompaniments. šÆ
Nutrition facts
Frequently asked questions
Can I substitute plums with other fruit?
Yes, but choose fruits with similar texture and sweetness. Pitted cherries or peaches work wellājust reduce sugar slightly since they're naturally sweeter. Avoid overly watery fruits like strawberries, as they can make the cake soggy. For a tart contrast, blueberries or blackberries are great alternatives.
Why is my streusel not crispy?
Cold butter is key! If your streusel turns out greasy or soft, your butter wasn't cold enough. Chill it for 30 minutes before processing, and pulse until pea-sized crumbs form. Also, avoid overmixingāthe streusel should hold together when pressed but still be crumbly.
How do I make this cake ahead of time?
This cake actually tastes better the next day! Bake it 1-2 days ahead and store wrapped at room temperature. For longer storage, freeze the assembled (but unbaked) cake for up to 3 months. Thaw overnight in the fridge before baking the streusel topping.
Can I make this cake in a single layer?
For a single-layer version, use a 10-inch springform pan and double the batter. Top with plums and streusel, then bake at 350Ā°F for 40-45 minutes. The texture will be slightly denser but still deliciousāgreat for smaller gatherings.
What's the secret to keeping the cake moist?
The heavy cream layer between cakes is your secret weapon! This creates a moisture barrier that prevents dryness. Also, never overbake the layersāthey should be just set when a toothpick comes out clean. The plums release their juices during baking, which keeps everything tender.