So… this blueberry streusel coffee cake? Oh my goodness, it’s so cozy and crumbly. It goes perfect with a cup of coffee or tea.

I made it one lazy morning, just for fun. And yep—it turned into the best part of my day.

The cake is soft. The blueberries pop with sweetness. And that streusel? Crunchy, buttery magic on top.

Wanna try it too? I’ll show you how I make mine. Let’s bake it together and make the day extra sweet!

Why You’ll Love This Blueberry Streusel Coffee Cake

• Perfectly Moist & Tender: Thanks to sour cream and milk, the cake stays soft and rich.
• Crunchy, Buttery Streusel: A delightful topping that adds a sweet, cinnamon-kissed crunch.
• Bursting with Blueberries: Fresh or frozen blueberries add natural sweetness and tartness.
• Ideal for Any Occasion: Perfect for breakfast, brunch, or dessert.
• Make-Ahead Friendly: Stays fresh for days and can be frozen for later!

Required Kitchen Tools

To make this Blueberry Streusel Coffee Cake, you’ll need:

✔️ Mixing Bowls – For preparing the cake batter and streusel topping.
✔️ Electric Mixer – Helps achieve a smooth and fluffy batter.
✔️ Measuring Cups & Spoons – For precise ingredient portions.
✔️ 8-inch or 9-inch Round Cake Pan – The ideal size for this coffee cake.
✔️ Whisk & Spatula – For mixing and folding ingredients.
✔️ Cooling Rack – Allows the cake to cool properly before adding glaze.

Ingredients

Here’s what you’ll need to make this irresistible Blueberry Streusel Coffee Cake (exact measurements are in the recipe card below):

For the Streusel Topping

• All-Purpose Flour – Creates the perfect crumbly texture.
• Brown Sugar – Adds sweetness and depth of flavor.
• Ground Cinnamon – Brings warmth and spice to the streusel.
• Unsalted Butter (Melted) – Helps bind the streusel and adds a rich, buttery flavor.
• Pinch of Salt – Enhances all the flavors.

For the Coffee Cake

• All-Purpose Flour – The base of the cake for a soft, tender crumb.
• Baking Powder – Helps the cake rise and stay fluffy.
• Salt – Balances the sweetness.
• Sugar – Adds sweetness and enhances the flavor of the blueberries.
• Unsalted Butter (Room Temperature) – Makes the cake rich and moist.
• Sour Cream – Adds moisture and a slight tang for a tender texture.
• Milk – Helps thin out the batter for a smooth consistency.
• Large Egg – Binds everything together and adds structure.
• Vanilla Extract – Brings out the flavors in the cake.
• Fresh or Frozen Blueberries – The star ingredient, adding juicy bursts of flavor.

For the Glaze

• Powdered Sugar – The base for the glaze, making it sweet and smooth.
• Milk – Helps achieve a pourable consistency.
• Vanilla Extract – Adds flavor depth to the glaze.

Step-by-Step Instructions

Follow these simple steps to make the most tender, flavorful, and bakery-worthy Blueberry Streusel Coffee Cake at home.

Step 1: Prepare the Streusel Topping

1. In a medium mixing bowl, combine ½ cup all-purpose flour, ⅓ cup packed brown sugar, 1 teaspoon ground cinnamon, and a pinch of salt.
2. Pour in ¼ cup melted unsalted butter and mix with a fork until crumbly.
3. Set the streusel aside while you prepare the cake batter.

Pro Tip: If you prefer a chunkier streusel, squeeze some of the mixture together with your fingers to form larger crumbles.

Step 2: Mix the Dry Ingredients

1. In another mixing bowl, whisk together 1 ½ cups all-purpose flour, 1 ½ teaspoons baking powder, and ¼ teaspoon salt.
2. Set aside.

Step 3: Cream the Butter and Sugar

1. In a large mixing bowl, using an electric mixer, beat ½ cup (1 stick) unsalted butter (room temperature) and ¾ cup granulated sugar together until light and fluffy (about 2-3 minutes).
2. Add 1 large egg and 1 teaspoon vanilla extract, then mix until fully incorporated.

Step 4: Add Wet and Dry Ingredients Alternately

1. Mix in ½ cup sour cream until well combined.
2. Alternate adding the dry ingredients and ¼ cup milk, starting and ending with the dry ingredients. Mix until just combined. Do not overmix!

Pro Tip: Overmixing can make the cake dense instead of soft and fluffy.

Step 5: Fold in the Blueberries

1. Gently fold in 1 cup fresh or frozen blueberries using a spatula.
2. If using frozen blueberries, do not thaw them—this prevents the color from bleeding into the batter.

Step 6: Assemble the Cake

1. Grease and lightly flour an 8-inch or 9-inch round cake pan (or line it with parchment paper).
2. Pour the batter into the prepared pan, spreading it evenly.
3. Sprinkle the streusel topping evenly over the cake batter.

Pro Tip: Press the streusel gently into the batter so it sticks while baking.

Step 7: Bake the Cake

1. Preheat your oven to 350°F (175°C).
2. Bake for 35-40 minutes, or until a toothpick inserted in the center comes out clean.
3. Let the cake cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.

How to Serve Blueberry Streusel Coffee Cake

This coffee cake is best served warm or at room temperature with your favorite beverage. Here are some delicious ways to enjoy it:

With Coffee or Tea – A perfect companion to your morning or afternoon drink.
With Ice Cream – Serve a warm slice with a scoop of vanilla or blueberry ice cream for a decadent dessert.
With Fresh Fruit – Pair with fresh strawberries, raspberries, or a side of extra blueberries.
With Honey or Maple Syrup – Drizzle a little over the top for extra sweetness.
With Milk – A kid-friendly option that makes this cake even more comforting.

Storage & Make-Ahead Tips

🔹 Room Temperature: Store in an airtight container at room temperature for up to 3 days.
🔹 Refrigeration: If you need to keep it longer, refrigerate it for up to 5 days. Warm slices in the microwave for 10-15 seconds before serving.
🔹 Freezing: Wrap individual slices in plastic wrap and store in a freezer-safe container for up to 3 months. Thaw at room temperature or warm slightly before serving.

Pro Tip: To keep the streusel crunchy, avoid covering the cake while it’s still warm—it can create excess moisture.

Variations & Ingredient Swaps

Want to customize this Blueberry Streusel Coffee Cake? Here are some fun variations:

Flavor Twists

Lemon Blueberry Coffee Cake: Add 1 tablespoon lemon zest and replace milk with fresh lemon juice for a tangy twist.
Coconut Blueberry Cake: Replace ¼ cup flour with shredded coconut for a tropical flavor.
Apple Cinnamon Coffee Cake: Swap blueberries for chopped apples and add an extra teaspoon of cinnamon.

Healthier Swaps

Whole Wheat Flour: Use 50% whole wheat flour for a fiber boost.
Refined Sugar-Free: Substitute brown sugar with coconut sugar and granulated sugar with honey or maple syrup.
Dairy-Free Version: Replace butter with coconut oil and milk with almond or oat milk.

Make It Extra Indulgent

Cream Cheese Swirl: Add a cream cheese layer by mixing 4 oz cream cheese, ¼ cup sugar, and 1 egg and swirling it into the batter before baking.
Chocolate Chip Blueberry Cake: Fold in ½ cup mini chocolate chips for a sweeter twist.
Nutty Crunch: Sprinkle chopped pecans or almonds into the streusel topping.

Nutrition Information (Per Slice)

Nutrient	Amount
Calories	280
Carbs	40g
Protein	4g
Fat	12g
Fiber	1g
Sugar	22g

(Nutrition is approximate and varies by ingredient brands.)

FAQs: Blueberry Streusel Coffee Cake

1. Can I use frozen blueberries?

Yes! No need to thaw them—just toss them in a little flour before adding to prevent the color from bleeding into the batter.

2. How do I keep my streusel crunchy?

Make sure your butter is fully melted when making the streusel, and don’t cover the cake while it’s still warm to avoid steam softening the topping.

3. Can I make this coffee cake ahead of time?

Absolutely! Store it at room temperature for up to 3 days or refrigerate for 5 days. It also freezes well for up to 3 months.

4. What’s the best way to reheat it?

Warm individual slices in the microwave for 10-15 seconds or heat the whole cake in a 300°F oven for 5-10 minutes.

5. Can I double this recipe?

Yes! Bake in a 9×13-inch pan for 40-45 minutes if doubling the ingredients.

Conclusion

This Blueberry Streusel Coffee Cake is truly a sweet slice of comfort, perfect for any occasion. With its moist, tender cake, sweet streusel topping, and bursting blueberries, it’s a treat that’s sure to bring joy to every bite. Whether you enjoy it with a cup of coffee, share it with friends and family, or savor it on your own, this recipe will become a favorite.

It’s also versatile, with options for make-ahead, variations, and easy storage. Plus, the simple glaze adds the perfect touch of sweetness to top it all off. So, grab your ingredients and treat yourself to a comforting slice of Blueberry Streusel Coffee Cake today! Don’t forget to share your creations with us—happy baking!