There's something beautifully simple about a German Blueberry Streusel Cake Recipe. In Germany, streuselkuchen is one of the most classic cakes you'll find on the table for Kaffee und Kuchen - soft cake, juicy fruit, and buttery crumbles on top. This version uses a traditional Rührteig (cake batter) base, fresh blueberries, and an almond streusel that bakes into golden, delicate crumbs.
It may look humble, but this German streusel cake is anything but ordinary. At my German bakery market stand, this style of cake is a consistent best seller. People take one bite and tell me how incredibly delicious it is - and yet it's built on one simple foundation: the streusel.
In Germany, Streuselkuchen is considered a Grundrezept - a foundational recipe every home baker knows. Once you master a German streusel cake, you can create endless variations with plums, apples, cherries, poppyseed, or quark. That's why you'll already find my German plum streusel cake with shortbread crust and my German poppyseed streusel cake here on the site. This German blueberry cake with streusel continues that tradition, but with a soft Rührteig base instead of a crust.
While blueberries are more common in American baking, they are still authentic and well loved in Germany - especially in summer when fresh berries are in season. A traditional German blueberry cake is simple, seasonal, and focused on balance.
Jump to:
Get my FREE Apple Strudel eBook!
Learn how to bake authentic apple strudel from home, along with a homemade vanilla sauce.
Ingredients
This traditional German blueberry streusel cake uses simple pantry ingredients, but quality truly makes a difference. Because this is a classic Rührteig-based German streusel cake, the texture depends on good butter, proper flour, and fresh fruit.
Below is an overview of what you'll need.
- Unsalted butter - American butter works perfectly in this recipe. Margarine is very common in German baking and can be used, but I personally prefer butter for flavor. European-style butter is lovely, but I have not found a dramatic difference in this particular cake.
- Sugar - Regular granulated sugar keeps the cake light and balanced without overpowering the fresh blueberries.
- Eggs - Use room temperature eggs for a smoother Rührteig batter and better structure.
- All-purpose flour - Flour truly makes a difference here. I recommend unbleached, non-bromated flour (I like King Arthur). It creates a softer crumb and more stable texture in this German blueberry cake with streusel.
- Ground almonds (almond flour) - I always recommend finely ground almonds rather than coarse almond meal. This gives the streusel a delicate, slightly nutty flavor and a tender crumble.
- Baking powder (aluminum-free) - Aluminum-free baking powder gives a cleaner taste and prevents any metallic aftertaste.
- Salt - Just a pinch enhances the sweetness and balances the almond streusel.
- Whole milk - Whole milk adds richness and keeps the cake soft without making it heavy.
- Fresh blueberries - Fresh berries are essential for an authentic German blueberry cake. Frozen blueberries release too much moisture and can weigh down the delicate cake batter.
See recipe card below for quantities.
Instructions
- Step 1 - Wash the fresh blueberries and allow them to dry in a strainer while preparing the rest of the cake. Using fresh berries helps keep the crumb of this German blueberry streusel cake light and prevents excess moisture.
- Step 2- In a bowl, combine cold cubed butter, flour, sugar, and ground almonds. Using your hands or a paddle attachment, mix until crumbly streusel forms. Refrigerate the streusel while you prepare the cake batter. Keeping the butter cold helps create those classic golden crumbles that make German streuselkuchen so special.
- Step 3 - Beat the softened butter and sugar together until light and creamy, about 3-5 minutes. Add the eggs one at a time, mixing well after each addition. In a separate bowl, mix the flour, baking powder, and salt. Add the flour mixture to the batter alternating with the milk, finishing with flour. Continue mixing until the batter becomes fluffy. Gently fold two-thirds of the fresh blueberries into the batter.
- Step 4 - Line a 14 × 9 inch pan with parchment paper and lightly grease the sides. Spread the thick batter evenly into the pan. Sprinkle the remaining blueberries over the batter, then top generously with the almond streusel. Bake at 350°F (175°C) for 45-60 minutes, until the cake is golden and a toothpick inserted in the center comes out clean. Allow the cake to cool slightly before slicing and serving with whipped cream.
How to Make German Streusel Topping
German streusel topping is very simple and traditionally made with cold butter, flour, and sugar. The butter should be cut into small cubes and mixed with the dry ingredients using your hands or a paddle attachment until crumbly streusel forms.
Many German bakers also add ground almonds or hazelnut flour to the streusel for extra flavor and a more delicate crumble. Keep the streusel in the refrigerator until you're ready to use it so the butter stays cold and bakes into golden crumbs on top of the cake.
Substitutions
If you need to adjust this German blueberry streusel cake recipe, here are a few substitutions that work well.
- Flour -You can substitute white spelt flour for all-purpose flour. Because spelt has a different gluten structure, reduce the mixing time slightly so the batter doesn't become overworked. I explain more about flour choices in my German baking flour guide.
- Butter-American butter works perfectly well in this cake. European butter has a higher fat content and richer flavor, but it isn't necessary for this recipe.
- Dairy-Free Option-I have not personally tested this cake dairy-free, but it should work with a few adjustments. Margarine can replace the butter, and almond milk can replace the whole milk. Keep in mind that the streusel may not taste quite as rich and buttery, which is an important part of a traditional German streuselkuchen.
Variations
One of the reasons streuselkuchen is considered a Grundrezept in German baking is that it works with many different flavors.
- Different Fruits-Instead of blueberries, you can make this German streusel cake with other fruits such as red currants, rhubarb, apples, peaches, cherries, or raspberries.
- Nut Variations-Ground hazelnuts can be used instead of almonds in the streusel topping. Hazelnuts give the crumble a slightly deeper, nuttier flavor that pairs especially well with fruit cakes.
- Cake Pan-This cake is baked in a 14 × 9 inch pan with a removable bottom, but other pans work well too. A 10-inch cake pan is a great option, though it may need a little more baking time. You can also bake this as a larger sheet cake - just keep an eye on the baking time since thinner cakes bake faster. This batter also works well for blueberry muffins if you prefer individual portions.
For another traditional version, try my German plum streusel cake with shortbread crust.
Equipment
You don't need any complicated equipment to make this cake, but a few tools will make the process easier:
- Mixer - A stand mixer with a paddle attachment works best for mixing the Rührteig batter and preparing the streusel, but a handheld mixer will work as well.
- Kitchen scale - I always recommend baking with a scale for the most accurate measurements, especially in traditional German baking.
- Cake pan - This cake is baked in a 14 × 9 inch cake pan with a removable bottom, which makes it much easier to lift and slice the finished streuselkuchen.
Storage
Store the German blueberry streusel cake covered at room temperature for up to 2 days.
Because the cake contains fresh fruit, you can also store it in the refrigerator for 3-4 days. Let it come to room temperature before serving so the crumb softens again.
This cake also freezes well. Slice the cake, wrap the pieces individually, and freeze for up to 2 months.
Top Tip
In traditional German Rührteig, it's recommended that ingredients like butter and eggs are at room temperature. If they are too cold, the butter-sugar mixture may look slightly separated after adding the eggs. Don't worry - this cake is very forgiving. Once the flour is added, the batter will come back together and bake beautifully.
Frequently Asked Questions
A German streusel cake, also called streuselkuchen, is a traditional German cake topped with buttery crumbs made from flour, butter, and sugar. It is often served for Kaffee und Kuchen and can be made with different fruits such as plums, apples, cherries, or blueberries.
Fresh blueberries work best for this German blueberry streusel cake. I have used frozen blueberries before, but only berries that I froze myself. Store-bought frozen blueberries tend to release more color and moisture, which can turn the cake batter blue.
German streusel cake is typically less sweet and lighter than an American crumb cake. It also has fewer streusel crumbs on top, allowing the fruit and soft cake base to shine. American crumb cakes often have a thick, sugary crumb layer, while traditional German streuselkuchen focuses on balance between the cake, fruit, and streusel.
Yes. Streusel cakes are very versatile. You can replace the blueberries with fruits like plums, rhubarb, apples, cherries, raspberries, or red currants. Many German bakers treat this cake as a Grundrezept that can be adapted to different seasonal fruits.
More Recipes You will LOVE
German Blueberry Streusel Cake Recipe
Ingredients
Equipment
Method
- Prepare the blueberries
- Wash the fresh blueberries and allow them to dry in a strainer while you prepare the rest of the cake.
- Make the streusel topping
- In a bowl, combine cold cubed butter, flour, sugar, and ground almonds. Mix with your hands or a paddle attachment until the mixture forms crumbly streusel. Refrigerate while preparing the cake batter.
- Prepare the cake batter (Rührteig)
- In a mixing bowl, beat the softened butter and sugar until light and creamy, about 3-5 minutes. Add the eggs one at a time, mixing well after each addition.
- In a separate bowl, combine the flour, baking powder, and salt. Gradually add the flour mixture to the batter, alternating with the milk and ending with flour. Mix for about 5 minutes until the batter becomes light and fluffy.
- Assemble the cake
- Gently fold two-thirds of the fresh blueberries into the cake batter.
- Line a 14 × 9 inch baking pan with parchment paper and lightly grease the sides. Spread the thick batter evenly into the prepared pan. Sprinkle the remaining blueberries over the top, followed by the streusel topping.
- Bake
- Bake at 350°F (175°C) for 45-60 minutes, or until a toothpick inserted in the center comes out clean. Baking times may vary depending on your oven.
- Cool and serve
- Allow the German blueberry streusel cake to cool before slicing. Serve with freshly whipped cream and optional powdered sugar.
This cake is a favorite. Super easy to make. You can also use other fruits and it works well.