Lemon Blueberry Crumb Coffee Cake

Highlighted under: Oven Favorites

I absolutely love making Lemon Blueberry Crumb Coffee Cake for brunch gatherings or cozy weekends at home. The brightness of fresh lemons combined with plump blueberries creates a delightful flavor profile that’s both refreshing and comforting. The crumb topping adds that perfect crunch, making it impossible to resist. If you're looking to impress your friends or just treat yourself, this recipe will not disappoint. Trust me, every bite is a scrumptious escape into a world of zesty goodness!

Created by

Arabelle Finch

Last updated on 2026-04-14T13:01:08.128Z

When I first crafted this Lemon Blueberry Crumb Coffee Cake, I was simply trying to combine flavors I adore. The zingy lemon pairs so well with the sweet-tart burst of blueberries, creating a cake that sings with every bite. I found that adding a touch of sour cream makes the cake unbelievably moist, while the crumb topping gives that satisfying crunch that makes you want to go back for seconds.

One specific tip I discovered was to toss the blueberries in a little flour before folding them into the batter. This prevents them from sinking to the bottom during baking, allowing for a lovely distribution throughout the cake. Every slice is a perfect blend of flavors and textures!

Secondary image

Why You'll Love This Recipe

  • Zesty lemon enhances the sweetness of the blueberries
  • Moist texture complemented by a crunchy crumb topping
  • Ideal for brunch, dessert, or as a special treat

Preparing the Perfect Crumb Topping

The crumb topping is what elevates this Lemon Blueberry Crumb Coffee Cake to a whole new level. The combination of brown sugar and cinnamon not only adds sweetness but also a warm, spicy aroma that will fill your kitchen as it bakes. For achieving the desired crumble, take care not to overmix the ingredients; you want your topping to have a sandy texture with visible chunks of butter for that coveted crunch. If you prefer a slightly nuttier flavor, consider adding chopped nuts to the crumb mixture.

For a topping with even more flavor, you can experiment with different spices; nutmeg or ginger pairs beautifully with the lemon and blueberry. Using cold butter as opposed to melted can also yield a different texture, so feel free to try both methods to see which you prefer. Just remember to keep the flour, sugar, and butter ratios balanced to maintain the right consistency.

Choosing and Preparing Blueberries

When it comes to blueberries, fresh is always best. Look for plump, firm berries with a deep blue color, which indicates ripeness and sweetness. If fresh blueberries are not available, you can substitute with frozen berries, just be sure to thaw them completely and drain any excess moisture. Tossing the blueberries with a little flour before folding them into the batter helps prevent them from sinking to the bottom during baking, ensuring an even distribution of fruit throughout the cake.

Keep an eye on how you mix the blueberries into the batter to avoid breaking them. Gently folding them in will help maintain their shape and the burst of flavor they provide when baked. This technique is particularly important if you're using delicate, overripe blueberries, where a gentle hand will go a long way.

Storing and Serving Your Coffee Cake

This Lemon Blueberry Crumb Coffee Cake holds up well for a few days at room temperature, but for longer freshness, I recommend storing it in an airtight container in the fridge. It can last up to a week, yet the crumb topping will lose its crunch if stored too long. For reheating, you can pop slices in the microwave for about 10-15 seconds or place them in a preheated oven at 350°F (175°C) for 5-10 minutes to regain some of that fresh-baked texture.

If you find yourself with leftovers (which is rare but can happen!), consider turning this dessert into a delightful breakfast treat. A slice of this cake served warm, topped with a dollop of whipped cream or a scoop of vanilla ice cream, makes for a scrumptious way to enjoy any remaining pieces. You can also drizzle a little lemon glaze over the top for added sweetness and zing!

Ingredients

For the Cake

  • 2 cups all-purpose flour
  • 1 cup granulated sugar
  • 1/2 cup unsalted butter, softened
  • 2 large eggs
  • 1/2 cup sour cream
  • 1/4 cup milk
  • 1 tablespoon lemon zest
  • 1 tablespoon lemon juice
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup fresh blueberries
  • 1 tablespoon all-purpose flour (for blueberries)

For the Crumb Topping

  • 1/2 cup all-purpose flour
  • 1/2 cup brown sugar
  • 1/4 cup unsalted butter, melted
  • 1 teaspoon cinnamon

Steps

Prepare the Crumb Topping

In a bowl, mix together 1/2 cup flour, brown sugar, melted butter, and cinnamon until crumbly. Set aside.

Make the Cake Batter

In a large mixing bowl, cream together softened butter and sugar until light and fluffy. Add eggs, sour cream, milk, lemon zest, and lemon juice; mix until well combined. In a separate bowl, whisk together flour, baking powder, baking soda, and salt. Gradually add the dry mixture to the wet mixture until just combined.

Fold in the Blueberries

Toss the blueberries with 1 tablespoon of flour, then gently fold them into the batter.

Assemble the Cake

Preheat your oven to 350°F (175°C). Grease and flour an 8-inch square baking pan. Pour the batter into the prepared pan and spread evenly. Sprinkle the crumb topping over the batter.

Bake

Bake in the preheated oven for 30 minutes or until a toothpick inserted in the center comes out clean.

Cool and Serve

Allow the cake to cool in the pan for 10 minutes before transferring it to a wire rack. Slice and enjoy your Lemon Blueberry Crumb Coffee Cake warm or at room temperature.

Pro Tips

  • For added flavor, drizzle a simple lemon glaze over the cooled cake before serving.

Make-Ahead Tips for Busy Schedules

If you want to enjoy this cake without the time commitment on a busy day, you can prepare the batter and crumb topping the night before. Store the batter in the fridge and the crumb topping in an airtight container at room temperature. In the morning, simply pour the batter into your prepared baking pan, top it with the crumb mixture, and bake as directed. This way, you can have freshly baked coffee cake ready for your weekend brunch with only a minimal amount of morning prep.

Alternatively, you can also freeze this cake for later enjoyment. Once fully cooled, wrap the entire cake tightly in plastic wrap and aluminum foil, or slice it and wrap individual portions. When you're ready to enjoy, let the cake thaw in the refrigerator overnight and then bring it to room temperature before serving.

Scaling the Recipe Up or Down

This recipe is easily scalable if you want to make more or less. For a larger gathering, simply double the ingredients and bake the cake in a 9x13-inch pan; be sure to monitor the baking time, which could increase by about 10-15 minutes. For smaller gatherings or personal servings, halving the ingredients will work perfectly, and you can bake the batter in a 6-inch round pan for a cute personal cake. Just keep an eye on it to prevent overbaking.

It's also worth noting that you can play around with the flavor profile by substituting different fruits. Fresh raspberries or diced peaches can also work well in this cake, complementing the lemon flavor beautifully. Just be mindful that moist fruits may alter the overall texture, so adjusting the flour slightly could maintain the balance.

Questions About Recipes

→ Can I use frozen blueberries?

Yes, you can use frozen blueberries, but don't thaw them before adding to the batter.

→ What can I substitute for sour cream?

You can use plain Greek yogurt as a substitute for sour cream.

→ How do I store leftover coffee cake?

Store leftover cake in an airtight container at room temperature for up to 3 days.

→ Can I make this cake ahead of time?

Yes, you can make the cake a day ahead; just store it covered to keep it fresh.

Lemon Blueberry Crumb Coffee Cake

Prep Time20 minutes
Cooking Duration30 minutes
Overall Time50 minutes

Created by: Arabelle Finch

Recipe Type: Oven Favorites

Skill Level: Intermediate

Final Quantity: 8 servings

What You'll Need

For the Cake

  1. 2 cups all-purpose flour
  2. 1 cup granulated sugar
  3. 1/2 cup unsalted butter, softened
  4. 2 large eggs
  5. 1/2 cup sour cream
  6. 1/4 cup milk
  7. 1 tablespoon lemon zest
  8. 1 tablespoon lemon juice
  9. 1 teaspoon baking powder
  10. 1/2 teaspoon baking soda
  11. 1/2 teaspoon salt
  12. 1 cup fresh blueberries
  13. 1 tablespoon all-purpose flour (for blueberries)

For the Crumb Topping

  1. 1/2 cup all-purpose flour
  2. 1/2 cup brown sugar
  3. 1/4 cup unsalted butter, melted
  4. 1 teaspoon cinnamon

How-To Steps

Step 01

In a bowl, mix together 1/2 cup flour, brown sugar, melted butter, and cinnamon until crumbly. Set aside.

Step 02

In a large mixing bowl, cream together softened butter and sugar until light and fluffy. Add eggs, sour cream, milk, lemon zest, and lemon juice; mix until well combined. In a separate bowl, whisk together flour, baking powder, baking soda, and salt. Gradually add the dry mixture to the wet mixture until just combined.

Step 03

Toss the blueberries with 1 tablespoon of flour, then gently fold them into the batter.

Step 04

Preheat your oven to 350°F (175°C). Grease and flour an 8-inch square baking pan. Pour the batter into the prepared pan and spread evenly. Sprinkle the crumb topping over the batter.

Step 05

Bake in the preheated oven for 30 minutes or until a toothpick inserted in the center comes out clean.

Step 06

Allow the cake to cool in the pan for 10 minutes before transferring it to a wire rack. Slice and enjoy your Lemon Blueberry Crumb Coffee Cake warm or at room temperature.

Extra Tips

  1. For added flavor, drizzle a simple lemon glaze over the cooled cake before serving.

Nutritional Breakdown (Per Serving)

  • Calories: 380 kcal
  • Total Fat: 26g
  • Saturated Fat: 15g
  • Cholesterol: 195mg
  • Sodium: 85mg
  • Total Carbohydrates: 32g
  • Dietary Fiber: 3g
  • Sugars: 24g
  • Protein: 6g