Is there anything more comforting and delightful than a perfectly baked crumb cake to kickstart your day or sweeten an afternoon? We believe not! And when that crumb cake combines two of the most invigorating flavors – bright, zesty lemon and sweet, juicy blueberries – the result is simply irresistible. This incredible Lemon Blueberry Crumb Cake recipe is designed to be effortlessly easy, yet yields a spectacular cake that will earn rave reviews from everyone who tries it. It’s the perfect treat for breakfast, brunch, or even a light dessert.

The magic of lemon in baking always brings a touch of sunshine and a flood of fond memories. For me, it instantly reminds me of my mama, who adores lemon-flavored treats. Her love for this vibrant citrus is undoubtedly why I’ve developed such a deep appreciation for it myself. It’s funny how flavor preferences can be so strong; during my years teaching, I quickly learned that lemon is quite a polarizing flavor! People tend to either absolutely adore it or strongly dislike it, with very little middle ground.
However, this particular Lemon Blueberry Crumb Cake manages to unite both camps. It strikes a beautiful balance, offering a distinct lemon presence without being overwhelming. The lemon zest and a layer of tangy lemon curd provide a bright, refreshing counterpoint to the sweetness of the blueberries and the richness of the cake. This thoughtful combination ensures that even those who are typically cautious about lemon will find themselves reaching for a second slice. It’s a harmonious blend of flavors that truly appeals to all palates, making it a guaranteed crowd-pleaser.

Crafting Your Perfect Lemon Blueberry Crumb Cake: A Step-by-Step Guide
Creating this delightful Lemon Blueberry Crumb Cake is a straightforward process, perfect for bakers of all skill levels. With a few simple steps, you’ll have a wonderfully moist and flavorful cake ready to enjoy.
- **Prepare Your Baking Pan:** Begin by preheating your oven to 350°F (175°C). Take a 9×9 inch baking pan and either generously spray it with a non-stick cooking spray or line it with parchment paper for easy removal. Set it aside.
- **Cream Wet Ingredients:** In a spacious mixing bowl, combine the softened butter with both granulated sugar and packed brown sugar. Using a handheld mixer (or a stand mixer with the paddle attachment, or even by hand with a whisk and spatula), beat these ingredients together until the mixture is light, fluffy, and creamy. This step is crucial for incorporating air and achieving a tender cake texture.
- **Add Flavor Enhancers:** To the creamed mixture, add one large egg, a teaspoon of pure vanilla extract, and the zest from half a lemon. Continue mixing until all these components are thoroughly incorporated. The lemon zest will infuse the cake with its bright, aromatic essence.


- **Incorporate Dry Ingredients:** In a separate bowl, whisk together the all-purpose flour, salt, and baking powder. Gradually add these dry ingredients to your wet mixture. Mix until just combined. It’s perfectly normal if the batter appears a little dry and crumbly at this stage – don’t worry, the next step will fix that!
- **Add Wet Ingredients and Blueberries:** Now, pour in the milk (we used 1%, but any kind works) and the sour cream all at once. Mix until a smooth, cohesive cake batter forms. Sour cream is the secret ingredient here, contributing significantly to the cake’s tender and moist texture. Finally, gently fold in the blueberries. If you’re using frozen berries, handle them with extra care and fold them in quickly to prevent them from thawing too much and bleeding their color into the batter, which can turn it purple.


- **Layer the Batter and Lemon Curd:** Carefully spread exactly half of your prepared batter into the bottom of your 9×9 inch baking pan. Distribute it evenly across the bottom.
- **Add the Zesty Layer:** Over this first layer of batter, generously spoon and spread the lemon curd. Aim for an even layer to ensure every bite gets a burst of tangy lemon flavor.


- **Top with Remaining Batter:** Gently spoon the remaining half of the blueberry batter over the lemon curd layer. Carefully spread it out to cover the curd completely, trying not to disturb the layer beneath.
- **Prepare the Crumb Topping:** In a separate medium bowl, combine the softened butter, brown sugar, all-purpose flour, lemon zest, and a pinch of salt. Using a pastry cutter, two forks, or even your fingertips, work the butter into the dry ingredients. Continue until the mixture forms beautiful, coarse crumbs. The key here is not to overmix; if you mix too much, you’ll end up with a paste instead of distinct crumbs, and we want that lovely, crunchy texture!


- **Add Crumb Topping:** Evenly sprinkle the crumb topping over the entire surface of the lemon blueberry batter. Don’t be shy; a thick and generous layer of crumb topping is one of the best parts of this cake!
- **Bake to Golden Perfection:** Place the pan in your preheated 350°F (175°C) oven and bake for approximately 55-60 minutes. The cake is done when a toothpick inserted into the center comes out clean, with no wet batter clinging to it.
- **Cool and Serve:** Once baked, remove the cake from the oven. You can serve it warm for a truly comforting experience, or allow it to cool completely on a wire rack before slicing.


For an extra touch of elegance and sweetness, I love to add a delicate dusting of powdered sugar over the cooled cake. However, this Lemon Blueberry Crumb Cake is absolutely perfect and utterly delicious just as it is. Whether you serve it as a hearty breakfast, a delightful brunch centerpiece, a sweet after-dinner dessert, or simply a satisfying snack, the most important thing is that you treat yourself and your loved ones to this phenomenal bake. It truly rocks!
Frequently Asked Questions About Lemon Blueberry Crumb Cake
Can I use Fresh or Frozen Blueberries in this Crumb Cake?
Absolutely, you have the flexibility to use either fresh or frozen blueberries for this recipe, and both will yield delicious results. I often opt for frozen blueberries because I typically have them on hand, and they work beautifully. If using fresh blueberries, ensure they are rinsed and gently patted dry before adding them to the batter.
When incorporating frozen blueberries, be a little more mindful. It’s best to add them directly from the freezer and fold them into the batter as quickly and gently as possible. If you stir them too vigorously or allow them to thaw extensively in the batter, their vibrant color can bleed, potentially turning your cake batter a purplish hue. While this doesn’t affect the taste, it might alter the visual appeal. For the best outcome, a light and swift fold will keep those berries intact and prevent excessive color dispersion.

Tips for Crumb Cake Perfection
- **Room Temperature Ingredients:** Ensure your butter, egg, milk, and sour cream are at room temperature. This allows them to cream together smoothly, creating a more emulsified batter that bakes evenly and results in a more tender crumb.
- **Don’t Overmix:** When adding the dry ingredients to the wet, mix only until just combined. Overmixing develops the gluten in the flour, leading to a tough and dry cake rather than a tender one.
- **Measure Flour Correctly:** Spoon your flour into the measuring cup and level it off with a straight edge, rather than scooping directly from the bag. This prevents compacting the flour and adding too much, which can make the cake dense.
- **Crumb Topping Texture:** For the crumb topping, work the butter into the dry ingredients until coarse crumbs form. Avoid overworking it, as this can melt the butter and create a paste instead of distinct crumbs.
- **Customize Lemon Zest:** Adjust the amount of lemon zest in both the cake and crumb topping to your personal preference. For a stronger lemon flavor, you can add a little more.
Serving and Storage Recommendations
This Lemon Blueberry Crumb Cake is incredibly versatile. Serve it warm, perhaps with a scoop of vanilla ice cream for dessert, or enjoy it cooled with a cup of coffee or tea for a truly comforting breakfast or afternoon treat. Garnish with a sprinkle of powdered sugar, a little extra lemon zest, or a few fresh blueberries for an appealing presentation.
To store any leftovers, place them in an airtight container. The cake will keep well at room temperature for up to 2-3 days, or in the refrigerator for up to 4-5 days. For longer storage, you can freeze individual slices or the entire cake (once completely cooled) in a freezer-safe container or tightly wrapped in plastic wrap and then foil, for up to 3 months. Thaw at room temperature or gently warm in the oven before serving.
More Delightful Breakfast Cake Recipes to Explore
If you’ve fallen in love with the ease and deliciousness of this crumb cake, you’ll be thrilled to discover more breakfast-friendly cake recipes. These are perfect for special mornings, brunches, or simply satisfying your sweet tooth any time of day:
More Crumb Cake Favorites
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Banana Crumb Cake Recipe
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Easy Zucchini Crumb Cake Recipe
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Easy Red Velvet Crumb Cake Recipe with a Cake Mix
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Apple Crumb Cake
Rating: 5 out of 5 stars (from 1 vote)
Easy Lemon Blueberry Crumb Cake with Sour Cream Recipe
June Albertson-Dick
15 mins
1 hr
1 hr 15 mins
12 servings
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Ingredients
Cake
- ½ cup butter, softened
- ½ cup granulated sugar
- ¼ cup brown sugar, packed
- 1 egg
- 1 teaspoon vanilla extract
- ½ lemon, zested
- 1 ½ cups all purpose flour
- ½ teaspoon salt
- 2 teaspoon baking powder
- ¾ cup milk, I used 1%
- ¼ cup sour cream
- 1 cup blueberries, I used frozen, but fresh works too
- ½-¾ cup lemon curd
Crumb Topping
- ½ cup butter, softened
- ¾ cup brown sugar, packed
- 1 cup all purpose flour
- ½ lemon, zested
- ¼ teaspoon salt
Instructions
Cake
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Preheat oven to 350°F (175°C). Spray a 9×9 inch baking pan with non-stick spray or line with parchment paper and set aside.
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In a medium bowl, combine softened butter, granulated sugar, and brown sugar. Beat with a handheld mixer (or stand mixer/by hand) until light and creamy.
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Add egg, vanilla extract, and lemon zest. Continue mixing until well combined.
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Add flour, salt, and baking powder. Mix until just combined. The mixture may be a bit crumbly, which is normal at this stage.
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Add the milk and sour cream all at once and mix until a smooth cake batter forms. Gently fold the blueberries into the mixture, being careful not to overmix, especially with frozen berries. Pour half of the batter into the prepared 9×9 inch pan. Top with an even layer of lemon curd, then spoon the remaining batter over the curd and spread gently.
Crumb Topping
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To make the crumb topping, combine softened butter, brown sugar, flour, lemon zest, and salt in a medium bowl. Cut the butter into the dry ingredients using a pastry cutter or fork until coarse crumbs form. Do not overmix, or it will become a paste. Spread this delicious crumb topping evenly over the batter in the pan.
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Bake for 55-60 minutes, or until a toothpick inserted near the center of the cake comes out clean. Remove from the oven and let it cool slightly on a wire rack before serving warm, or cool completely. Store leftovers in an airtight container at room temperature for up to 4 days, or in the refrigerator. Freeze for up to 3 months.
Nutrition
Calories: 399kcal,
Carbohydrates: 56g,
Protein: 4g,
Fat: 18g,
Saturated Fat: 11g,
Polyunsaturated Fat: 1g,
Monounsaturated Fat: 4g,
Trans Fat: 1g,
Cholesterol: 59mg,
Sodium: 384mg,
Potassium: 113mg,
Fiber: 1g,
Sugar: 34g,
Vitamin A: 556IU,
Vitamin C: 6mg,
Calcium: 92mg,
Iron: 2mg
Nutrition information is automatically calculated, so should only be used as an approximation.
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