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Best Blueberry Coffee Cake

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There is no morning ritual quite as comforting as a hot cup of coffee paired with a slice of cake that is allowed to be eaten for breakfast. This Blueberry Coffee Cake is the ultimate morning treat. Max calls it the "purple pokadot cake" because it is absolutely loaded with bursting fruit. Unlike dry, crumbly versions you might find at a coffee shop, this recipe uses sour cream to ensure a tender, moist crumb that melts in your mouth, all crowned with a buttery, cinnamon-spiced streusel topping.

Moist blueberry coffee cake slice with a buttery crumb topping, layers of juicy blueberries, and fresh blueberries on top, served on a plate with a fork. Save it For Later
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Why You Will Love This Blueberry Coffee Cake

This recipe strikes the perfect balance between a buttery vanilla cake and a fruit tart. It is incredibly moist thanks to the addition of sour cream, which creates a dense yet soft texture that supports the weight of the berries. The contrast is stunning: the soft, sweet cake, the tart explosions of warm blueberries, and the crunchy, sandy texture of the cinnamon crumble on top. It’s rustic, easy to assemble, and makes your kitchen smell like a bakery.

How To Make Blueberry Coffee Cake

To achieve the thick, square slices seen in the photo, we bake this in a square pan rather than a bundt. We start by making a simple streusel topping with cold butter, flour, and cinnamon. For the batter, we cream butter and sugar until fluffy, then beat in eggs and sour cream for richness. We gently fold in fresh blueberries—tossing them in a little flour first so they don't sink—and bake it until the crumb topping is golden and the fruit is bubbling.

Blueberry Coffee Cake Ingredients

The Cinnamon Streusel Topping

  • ½ cup all-purpose flour
  • ⅓ cup granulated sugar
  • ⅓ cup brown sugar (packed)
  • 1 teaspoon ground cinnamon
  • 4 tablespoons unsalted butter (cold, cubed)

The Moist Cake Base

  • 2 cups all-purpose flour (plus 1 tablespoon for coating berries)
  • 2 teaspoons baking powder
  • ½ teaspoon salt
  • ½ cup unsalted butter (softened)
  • ¾ cup granulated sugar
  • 2 large eggs (room temperature)
  • 1 teaspoon vanilla extract
  • ½ cup sour cream (full fat is best)
  • 2 cups fresh blueberries (rinsed and dried)
Ingredients for Blueberry Coffee Cake arranged in a 4-panel flat lay on a wooden table. Save it For Later

Step by Step Method

Make the Streusel

  • In a small bowl, whisk together the flour, granulated sugar, brown sugar, and cinnamon.
  • Cut in the cold butter using a fork or your fingers until the mixture looks like coarse wet sand with some pea-sized clumps. Set aside in the fridge.

Mix the Dry Ingredients

  • Preheat oven to 350°F (175°C). Grease and flour an 8x8 or 9x9 inch square baking pan (or line with parchment paper).
  • In a medium bowl, whisk together the 2 cups of flour, baking powder, and salt.

Make the Batter

  • In a large bowl or stand mixer, beat the softened butter and sugar together on medium-high speed until pale and fluffy (about 3–4 minutes).
  • Add the eggs one at a time, beating well after each. Scrape down the sides of the bowl.
  • Mix in the vanilla extract and sour cream until combined.
  • Gradually add the dry ingredients to the wet ingredients, mixing on low speed just until the flour disappears. The batter will be thick.

Fold and Assemble

  • Toss the blueberries with the remaining 1 tablespoon of flour (this prevents them from sinking to the bottom).
  • Gently fold the berries into the batter using a spatula, being careful not to crush them.
  • Spread the batter evenly into the prepared pan.
  • Sprinkle the streusel topping generously over the entire surface.
  • Scatter a few extra fresh blueberries on top of the streusel for presentation.

Bake

  • Bake for 40–50 minutes, or until a toothpick inserted into the center comes out clean (moist crumbs are okay, but no raw batter).
  • Let cool in the pan for at least 20 minutes before slicing into squares.
Blueberry coffee cake with a golden crumb topping and moist vanilla cake studded with fresh blueberries, sliced open to show the soft interior on a dark plate. Save it For Later

Max’s Reaction: "I love picking the big crunchy crumbs off the top! The blueberries pop in your mouth like warm jelly."

What Pairs Well With Blueberry Coffee Cake

Obviously, coffee is the best friend of this cake. A medium roast with a splash of cream complements the cinnamon notes perfectly. For a weekend brunch, serve this alongside savory items like scrambled eggs or bacon to balance the sweetness. It is also delicious served warm with a dollop of vanilla yogurt or whipped cream.

Blueberry Coffee Cake Variations

Lemon Blueberry

  • Rub 1 tablespoon of fresh lemon zest into the sugar before creaming it with the butter. The citrus oil brightens the flavor and highlights the berries.

Mixed Berry

  • Substitute half of the blueberries for raspberries or blackberries. Just keep the total fruit volume to 2 cups.

Almond Crunch

  • Add ¼ cup of sliced almonds to the streusel topping for an extra nutty crunch.

Loaf Style

  • You can bake this in a standard 9x5 loaf pan, but you will need to increase the baking time to 55–65 minutes.
Easy blueberry coffee cake with a buttery crumb topping and juicy blueberries, shown as a moist square slice on a plate, styled for a Pinterest recipe pin. Save it For Later

Equipment

  • 8x8 or 9x9 Square Baking Pan
  • Electric Mixer
  • Mixing Bowls
  • Rubber Spatula

Storage / Make Ahead / Serving Tips

Storage Tips That Keep It Fresh

Store the cake covered at room temperature for up to 2 days. For longer storage, keep it in the refrigerator for up to 5 days. The moisture from the berries keeps it fresh longer than most cakes.

Make Ahead Strategy

You can make the streusel topping up to 3 days in advance and keep it in the fridge. You can also bake the cake the night before; the flavors actually meld and improve by the next morning.

Freezing Instructions

This cake freezes beautifully. Wrap individual squares in plastic wrap and then foil. Freeze for up to 3 months. Thaw at room temperature or warm gently in the microwave.

Top Tips for Best Blueberry Coffee Cake

The secret to a tender cake is not overmixing. Once you add the flour, mix only until combined. Overmixing develops gluten and makes the cake tough. Also, don't skip the sour cream. If you don't have it, full-fat Greek yogurt is the only acceptable substitute; regular milk will make the batter too thin. Finally, coating the berries in flour is a crucial step to ensure they stay suspended throughout the cake rather than forming a soggy layer at the bottom.

Blueberry Coffee Cake Frequently Asked Questions

Can I use frozen blueberries?

Yes. Do not thaw them first, as they will bleed into the batter and turn it gray. Toss them in flour while frozen and fold them in at the very last second. You may need to add 5 minutes to the baking time.

Why did my streusel sink?

If the batter is too thin (often from using milk instead of sour cream) or if you opened the oven door too early, the topping might sink.

Can I double the recipe?

Yes, simply bake it in a 9x13 inch pan. Check for doneness around the 45-minute mark

A Cozy Morning Essential

This cake is simple, rustic, and incredibly satisfying. It turns a standard breakfast into a special occasion. If you are looking for more sweet treats to fill your holiday or weekend table, try the fun Harry Potter Butterbeer Popcorn for a movie marathon, or the elegant White Chocolate Raspberry Yule Log for a festive centerpiece. For a bite-sized indulgence, our White Chocolate Raspberry Fudge is always a winner.

Share your Blueberry Coffee Cake! Tag us @HannahCooking with #BlueberryCoffeeCake; we’re dying to see your version and hear about your homemade kitchen stories!

⭐️ Rate this Blueberry Coffee Cake recipe and let us know what twists or ingredients you used!

Looking for other recipes like Blueberry Coffee Cake? Try these:

Moist blueberry coffee cake slice with a buttery crumb topping, layers of juicy blueberries, and fresh blueberries on top, served on a plate with a fork. Save it For Later

Blueberry Coffee Cake

A moist and tender breakfast cake made with sour cream and fresh blueberries, topped with a crunchy cinnamon streusel.
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Servings: 9 square
Course: Breakfast, Dessert
Cuisine: American
Calories: 380
Ingredients Equipment Method Notes

Ingredients
  

  • 2 cups all-purpose flour Plus 1 tablespoon for berries
  • 2 teaspoon baking powder Leavening
  • ½ teaspoon salt Balance
  • ½ cup butter Softened, for cake
  • ¾ cup granulated sugar For cake
  • 2 large eggs Room temperature
  • ½ cup sour cream Full fat
  • 1 teaspoon vanilla extract Flavor
  • 2 cups fresh blueberries Rinsed and dried
  • ½ cup all-purpose flour For streusel
  • ⅓ cup brown sugar Packed, for streusel
  • ⅓ cup granulated sugar For streusel
  • 1 teaspoon cinnamon Ground
  • 4 tablespoon butter Cold, cubed for streusel

Equipment

  • 1 Square Baking Pan 8x8 or 9x9 inch
  • 1 Electric mixer Hand or stand
  • 2 Mixing bowls Medium and large

Method
 

  1. Mix flour, sugars, and cinnamon; cut in cold butter until crumbly. Refrigerate.
  2. Whisk flour, baking powder, and salt. In a separate bowl, cream butter and sugar until fluffy.
  3. Add eggs, vanilla, and sour cream to butter mixture. Fold in dry ingredients.
  4. Toss blueberries with 1 tablespoon flour and fold into batter. Spread in greased 9x9 pan.
  5. Top with streusel. Bake at 350°F for 40-50 minutes. Cool before slicing.

Notes

Toss blueberries in a little flour before adding to the batter to prevent them from sinking. Use full-fat sour cream for the best texture.

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