Bright lemon, juicy blueberries, and a crisp buttery crumb topping come together in this soft Lemon Blueberry Crumb Loaf that’s simple enough for everyday baking but special enough to share.
When developing this recipe, my goal was to make a cake that can be eaten anytime, like in those bakeries in Germany, where people sit, talk, and nibble on their torte on a random Tuesday afternoon. The cake was to be just sweet enough to help support its structure, delightfully soft and moist, then finished with a generous layer of crumb. And this is how this Lemon Blueberry Crumb Loaf came to be.
Incredibly tender and delicate beneath a generous buttery crumb, it’s got just enough lemon to make it bright. The crumb is incredibly moist and soft, and because we’re using olive oil instead of butter, the loaf stays tender for days, even when refrigerated.
Ingredients
Orange and Lemon Zest: Using both orange and lemon zest creates a more rounded citrus flavor than lemon alone. The orange adds sweetness and floral notes, while the lemon keeps the loaf bright.
Olive Oil: Olive oil gives the loaf a soft, tender crumb that stays moist for days. Choose a mild, fruity olive oil so its flavor complements the citrus instead of overpowering it.
Heavy Cream: This is not a classic butter loaf, but it’s just as rich and flavorful. Heavy cream is used to add fat and flavor, contributing to the loaf’s delicate texture. Combined with the olive oil, it creates a cake that is both light and exceptionally moist.
Lemon Juice: A tablespoon of fresh lemon juice reinforces the citrus flavor without making the loaf overly tart. The zest in the batter and crumb helps bring out those citrusy notes.
Blueberries:Fresh blueberries provide bursts of sweetness throughout the loaf. If using frozen blueberries, add them straight from the freezer to prevent excess bleeding into the batter.
Baking Tips
- Use a kitchen scale! Measuring the ingredients by weight guarantees the most consistent results.
- Toss blueberries with a little flour to help prevent sinking.
- Avoid overmixing once the flour is added.
- If the crumb topping begins browning too quickly, loosely tent the loaf with foil during the final part of baking.
- Let the loaf cool before slicing so the crumb sets properly.
Variations
Although this loaf is perfect as is, highlighting the lemon and blueberries, feel free to make it your own.
Add Poppy Seeds: Stir a tablespoon or two of poppy seeds into the batter for additional texture.
Mixed Berries: Replace part of the blueberries with raspberries or blackberries.
Almond Version: Add almond extract to the batter and mix sliced almonds into the crumb.
FAQ
Why do you rub the citrus zest into the sugar?
Rubbing zest into the sugar helps release the natural oils in the citrus peel. This infuses the batter with a stronger, more even lemon and orange flavor instead of relying on juice alone.
Can I skip tossing the blueberries in flour?
You can, but it’s recommended. A light coating of flour helps suspend the blueberries in the batter so they don’t all sink to the bottom while baking.
Can I make the crumble ahead of time?
Yes. The crumble can be made in advance and kept chilled until needed. Keeping it cold helps it bake into larger, crisp pieces rather than melting into the cake.
How do I know when the loaf is done baking?
The loaf is ready when a toothpick inserted into the center comes out clean or with a few moist crumbs. The top should be golden and the crumble set.
If you make this Lemon Blueberry Crumb Loaf, please let me know in the comments! I’d love to hear from you.
More Cake Recipes
Apricot Olive Oil Cake: A tender olive oil cake made with roasted apricots that become jammy as they bake. Simple enough for everyday baking and just as good served with whipped cream or on its own.
Whole Wheat Orange Cake with Lemon Curd: Whole wheat flour gives this orange cake a delicate nuttiness, while a layer of lemon curd adds a bright, tangy contrast. Soft, citrusy, and balanced without being overly sweet.
Pumpkin Cream Cheese Swirl Cake with Brown Butter Frosting: A warmly spiced pumpkin cake swirled with cream cheese and finished with brown butter frosting. Rich enough for celebrations yet easy enough to bake whenever pumpkin season arrives.
Strawberry Orange Layer Cake: Light orange cake layers filled with fresh strawberries and whipped cream. Bright citrus and sweet berries make it a great choice for spring and summer gatherings.
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Lemon Blueberry Crumb Loaf
Ingredients
Equipment
For the Crumb:
- 80g (⅓ cup + 1 tbsp) granulated sugar
- Zest 1 lemon
- 80g (⅔ cup) all-purpose flour
- 50g (3½ tbsp) cold butter, cubed
For the Cake:
- 250g (2 cups) all-purpose flour, plus more for coating blueberries
- 1 ¼ tsp baking powder
- ½ tsp salt
- 250g (1¼ cups) 250g granulated sugar
- Zest 1 orange
- Zest 1 lemon
- 3 eggs
- 120g (½ cup) 120g heavy cream
- 80g (⅓ cup plus 1 tsp) olive oil
- 1 tbsp lemon juice
- 170g (1¼ cups) blueberries
- Powered sugar, optional, for serving
Instructions
- Make the crumble: Add the sugar and lemon zest to a medium bowl. Using your fingers, rub the lemon zest into the sugar to release the oils.
- Stir in the flour and add the butter, rubbing it into the flour until the mixture resembles coarse crumbs. You can also use a hand mixer and beat on low speed until a crumble forms. Keep chilled while you prepare the cake.
- Make the cake: Grease your loaf pan with butter and line it with parchment paper. Set aside.
- In a medium bowl, combine the flour, baking powder, and salt. Set aside. Preheat the oven to 325°F (160°C).
- Add the sugar, orange zest, and lemon zest to a large bowl or the bowl of your stand mixer. Rub the orange and lemon zest into the sugar with your fingers.
- Add the eggs to the citrus sugar and, using a hand mixer, beat until thick, pale, and voluminous.
- Stir in the cream. Sift in the flour mixture and gently fold until combined.
- Stir in the olive oil and lemon juice. Toss the blueberries in a little flour and fold them into the batter.
- Pour the batter into the prepared loaf pan and scatter the crumble evenly across the top.
- Bake for 60-80 minutes, or until a toothpick inserted into the center comes out clean. Dust with powdered sugar and serve.
