Moist Blueberry Crumb Cake with Brown Sugar Topping

↓ JUMP TO RECIPE ↓ STEP-BY-STEP

This moist and sweet blueberry crumb cake with brown sugar topping is one of our favorite spring desserts for a crowd — perfect for Mother’s Day desserts and easy spring baking!

Don’t forget to like, comment, and rate this recipe!

About This Blueberry Crumb Cake

Need an easy Mother’s Day cake or spring dessert for a crowd?

Try this crave-worthy crumb cake recipe that’s dotted with fresh blueberries and topped with blueberry jam and brown sugar crumb topping!

It’s one of those blueberry recipes you’ll want to make all season long, and it’s great for a crowd, whether served at a spring potluck, baby shower, or Mother’s Day dinner.

If you like blueberry cake, you have to give this homemade, blueberry coffee crumb cake a try!

YOU’LL LOVE THIS RECIPE BECAUSE IT’S:

• Bursting with blueberry flavor. Juicy fresh blueberries and a swirl of blueberry jam bake into every bite, creating a sweet and slightly tart flavor that pairs perfectly with the tender cake.
• Loaded with buttery crumb topping. The thick cinnamon crumb topping bakes up golden and crunchy, giving the cake that classic bakery-style texture everyone loves.
• Perfect for breakfast or dessert. This blueberry crumb cake is just as good with your morning coffee as it is served after dinner with a scoop of vanilla ice cream.
• Simple to make. Even though it looks impressive, this recipe uses straightforward ingredients and easy steps that make it approachable for any home baker.
• Great for sharing. Baked in an 8×8 pan and cut into squares, it’s perfect for brunch, potlucks, or bringing along to gatherings.

Key Ingredients

For the Crumb Topping

• Granulated & Light Brown Sugar: Using a combination of both sugars creates the ultimate coffee-cake style crumb. The packed brown sugar provides moisture and a rich, molasses caramel flavor, while the white sugar ensures the crisp, crunch factor on top.
• Cinnamon & Salt: A generous warmth from ground cinnamon provides that iconic bakery aroma, while a pinch of salt sharpens the flavors so the topping doesn’t taste flatly sweet.
• Melted Unsalted Butter: Acts as the fat binder that holds the flour and sugars together. Melting the butter is the secret trick to achieving those thick, distinct, and chunky crumb clumps that won’t completely melt or disappear into the cake batter.
• All-Purpose Flour: Forms the structural base of the streusel topping, turning the melted butter and sugars into solid, crunchy clusters.

For the Cake Base

• All-Purpose Flour, Baking Powder & Baking Soda: This specific leavening combination gives the cake a perfect, uniform lift capable of supporting the heavy weight of the fresh fruit and thick crumb topping without sinking in the center.
• Room Temperature Eggs: Ensure your eggs are truly at room temperature before mixing. Cold eggs will instantly cause your melted, cooled butter to solidify and clump up, resulting in an uneven cake batter texture.
• Milk & Sour Cream: The ultimate dairy duo for moisture. Sour cream is the secret ingredient here; its natural acidity breaks down the gluten strings in the flour, yielding an ultra-soft, melt-in-your-mouth texture that stays moist for days. Plain Greek yogurt is an excellent swap.
• Vanilla & Almond Extract: While vanilla extract provides a classic flavor baseline, adding a splash of almond extract is a professional baking secret. Almond extract heavily intensifies the natural flavor of the blueberries, making the fruit pop beautifully.
• Blueberry Jam: Swirled gently into the top of the batter right before baking to create concentrated, gooey pockets of rich berry flavor throughout the cake.
• Fresh Blueberries: Plump, fresh blueberries provide a burst of juicy acidity in every single bite.
  • 💡 Chef’s Secret: Toss your fresh berries in a teaspoon of flour before folding them into the batter. This light dusting prevents the berries from sinking straight to the bottom of your baking pan!

Step-by-Step Recipe Instructions

Prep the Pans & Make the Crumble

1. Preheat the oven: Preheat your oven to 350°F.
2. Prep the baking pan: Spray an 8×8 square baking pan with non-stick spray, then line it with parchment paper. (Make sure there’s overhang on the sides so you can lift the cake out when it’s done.)
3. Prep the crumble sheet: Cover a large sheet pan with parchment paper and foil for the crumble and set aside.
4. Mix the topping sugars: For the crumb topping, combine granulated sugar, light brown sugar, cinnamon, and salt in a medium bowl.
5. Form the crumb clumps: Whisk in melted, unsalted butter, then add all-purpose flour and stir just until moist.
6. Dry the streusel: Spread the mixture onto the lined baking sheet to dry and get crumbly.

Mix the Cake Batter

7. Whisk the dry ingredients: While the crumble topping dries, use a medium bowl to whisk together all-purpose flour, granulated sugar, baking powder, baking soda, and salt, and set aside.
8. Beat the wet base: In a large mixing bowl or stand mixer fitted with a paddle attachment, beat large room temperature eggs and melted and cooled unsalted butter on medium speed until well combined.
9. Incorporate the liquids: Add milk, sour cream, vanilla extract, and almond extract, and mix on medium speed until well combined.
10. Combine and pan: Turn the mixer to low, and slowly incorporate the dry ingredients until just combined and then pour the batter into the prepared baking pan.

Layer and Bake

11. Prep the fruit layer: In a small bowl, stir together blueberry jam and fresh blueberries, then evenly spread the mixture over the cake batter.
12. Add the topping: Sprinkle on the crumb topping and gently press it into the batter.
13. Bake until golden: Bake for 35 to 38 minutes, or until a toothpick inserted in the center comes out clean.
    • Chef’s Note: Check the cake around 30 minutes to make sure the crumb topping isn’t getting too brown. If it is, tent the cake with aluminum foil.
14. Cool and serve: Let the cake cool for 10 minutes before lifting it out of the pan and moving it to a cooling rack to cool completely.

Recipe Tips and Variations

Secrets for Success

1. Don’t skip the parchment paper: Leaving parchment overhang on the sides makes it easy to lift the entire cake out of the pan for clean slicing.
2. Use room temperature eggs: Room temperature eggs mix more easily into the batter and help create a smoother, more evenly blended cake. When eggs are cold, they don’t incorporate as well with the butter and other ingredients, which can affect the cake’s texture.

For best results, let the eggs sit at room temperature for about 20–30 minutes before baking. If you forget, place them in a bowl of warm (not hot) water for 5–10 minutes to bring them to room temperature quickly.

How to Store and Freeze

Store the cake in an airtight container at room temperature for up to 2 days, or refrigerate for up to 5 days.

Wrap individual slices tightly in plastic wrap and freeze for up to 2 months. Thaw at room temperature before serving.

Variations

• Try different berries: Swap the blueberries for raspberries, blackberries, or chopped strawberries for a fun twist.
• Make it lemony: Add 1–2 teaspoons of lemon zest to the batter for a bright flavor that pairs perfectly with blueberries.
• Add a simple glaze: Drizzle the cooled cake with a quick glaze made from powdered sugar and milk or lemon juice for a bakery-style finish.
• Use Greek yogurt instead of sour cream: Plain Greek yogurt works as an easy substitute and keeps the cake moist.

FAQs

Recipe Card

SAVE THIS RECIPE ON PINTEREST!