If you’re looking for a delicious dessert that combines the tartness of rhubarb with a crumbly topping, then a German Rhubarb Crumble Cake is a fantastic choice. This recipe not only showcases the wonderful flavor of fresh rhubarb but also offers a healthier twist. Using simple ingredients, you can create a dessert that’s satisfying and adaptable to various dietary needs, making it great for any occasion.
Why You Will Love This Recipe
This German Rhubarb Crumble Cake is a lighter option compared to many traditional desserts. With the addition of rhubarb, you are incorporating a fruit that is low in calories but high in fiber, making it good for weight loss. This cake is also rich in flavor, thanks to the tart sweetness of rhubarb combined with a crumbly topping. Plus, it’s perfect for meal prep. You can whip it up on the weekend, store it in the fridge, and enjoy a piece throughout the week.
How to Make German Rhubarb Crumble Cake
Making this scrumptious cake is straightforward and can be done in just a few simple steps. The combination of ingredients creates a delightful texture that is sure to please everyone.
Equipment Needed
- Mixing bowls
- Measuring cups and spoons
- A whisk or electric mixer
- A baking pan (9×13 inches recommended)
- A chopping board and knife
Ingredients You’ll Need:
- 2-3 stalks fresh rhubarb, chopped
- ½ cup (115g) unsalted butter, softened
- ¾ cup (150g) white granulated sugar
- 2 eggs
- 1 tsp vanilla extract
- 2 cups (250g) all-purpose flour
- 2 tsp baking powder
- Pinch of salt
- 1 cup (240ml) buttermilk
- 1 cup (125g) all-purpose flour
- ½ cup (100g) white granulated sugar
- ½ cup (115g) cold butter
Step-by-Step Instructions:
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Wash and Chop Rhubarb: Begin by washing the rhubarb stalks. Chop them into small pieces.
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Prepare the Streusel Topping: In a mixing bowl, combine 1 cup of flour, ½ cup of sugar, and ½ cup of cold butter. Mix these ingredients with your hands or a fork until the mixture is crumbly. Chill in the refrigerator while you prepare the cake batter.
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Make the Cake Batter: In a separate bowl, cream together the softened butter and the remaining sugar. Beat in the eggs, one at a time, followed by the vanilla extract until well combined.
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Combine Dry and Wet Ingredients: Gradually add the remaining flour, baking powder, and a pinch of salt alternately with the buttermilk. Mix until just combined.
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Prepare the Pan: Preheat your oven to 350°F (175°C). Grease your baking pan with butter or cooking spray.
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Add the Cake Batter: Pour the cake batter into the greased pan and spread it out evenly. Gently fold the chopped rhubarb into the batter, then sprinkle the chilled crumbly topping over the rhubarb layer.
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Bake: Place the pan in the preheated oven and bake for 40-45 minutes or until the top is golden brown and a toothpick inserted into the center comes out clean.
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Cool Before Serving: Allow the cake to cool in the pan for a bit before transferring it to a wire rack. Let it cool completely before serving.
How to Serve German Rhubarb Crumble Cake
This cake is perfect as a dessert or a sweet snack. Cut it into small squares to help with portion control—this is particularly useful for those watching their calorie intake. Serve it plain, or give it a touch of elegance by dusting with powdered sugar. For a healthful twist, consider pairing it with a scoop of Greek yogurt for a dose of protein and probiotics. This makes for a balanced meal, offering a satisfying balance of sweetness and tanginess.
Storage & Freezing: German Rhubarb Crumble Cake
To store your German Rhubarb Crumble Cake, keep it in an airtight container in the refrigerator. It will stay fresh for about 4-5 days. For longer preservation, you can freeze the cake. Wrap it tightly in plastic wrap and aluminum foil to prevent freezer burn. When properly stored, it can last up to 3 months in the freezer. Thaw overnight in the refrigerator before serving.
Serving Suggestions
Add a healthy side to your dessert table by serving this cake with a simple mixed green salad drizzled with a light vinaigrette. This balance adds freshness and helps round out your meal, making it a great option for a lighter dinner or brunch.
Variations
Healthier Version
You can create a healthy version of this cake by replacing the white sugar with coconut sugar or a sugar substitute like stevia. You can also use whole wheat flour instead of all-purpose flour for added fiber and nutrients.
High-Protein or Low-Carb Version
For a high-protein twist, consider adding some protein powder to the cake batter. If you’re aiming for a low-carb alternative, try using almond flour instead of regular flour and a low-carb sweetener that will suit your taste.
Air Fryer or Oven-Baked Version
If you want to make this cake in an air fryer, preheat your air fryer to 320°F (160°C). Pour the batter into a suitable air fryer-safe pan or tin, and cook for about 25-30 minutes or until a toothpick comes out clean. This method reduces cooking time and gives the cake a great crust.
FAQs
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Can I use frozen rhubarb for this recipe?
Yes, you can use frozen rhubarb. Just thaw it and drain any excess liquid before adding it to the batter. -
Is this cake diabetic-friendly?
By using a sugar substitute and whole wheat flour, this cake can be adaptable for those managing blood sugar levels. -
How can I make this recipe nut-free?
This recipe is naturally nut-free, but always check your ingredients to ensure there is no cross-contamination. -
What is the best way to store leftover cake?
Store leftovers in an airtight container in the refrigerator for up to 5 days, or freeze for longer storage.
Make-Ahead Tips for German Rhubarb Crumble Cake
This cake is a fantastic choice for meal prep. You can make it a day or two in advance and store it in the fridge. This saves time on busy weekdays and ensures you have a delightful healthy dessert ready to go. You can also consider making a double batch and freeze one for future cravings, making it a convenient option for on-the-go snacks or quick desserts.
This German Rhubarb Crumble Cake is not only delicious but also a healthy and balanced choice that everyone will love. Experiment with the variations and make it your own while enjoying all the benefits it has to offer!

German Rhubarb Crumble Cake
Ingredients
Method
- Wash the rhubarb stalks and chop them into small pieces.
- In a mixing bowl, combine 1 cup of flour, ½ cup of sugar, and ½ cup of cold butter. Mix until crumbly and chill in the refrigerator.
- In a separate bowl, cream together the softened butter and remaining sugar. Beat in the eggs one at a time, then add the vanilla extract until well combined.
- Gradually add the remaining flour, baking powder, and a pinch of salt alternately with buttermilk; mix until just combined.
- Preheat the oven to 350°F (175°C). Grease your baking pan.
- Pour the cake batter into the greased pan, fold the chopped rhubarb into the batter, and sprinkle the chilled topping over it.
- Bake for 40-45 minutes or until the top is golden brown and a toothpick comes out clean.
- Allow the cake to cool in the pan before transferring to a wire rack. Let it cool completely before serving.