Banana Blueberry Coffee Cake Recipe

Oh wow, have you ever tried a cake that’s got bananas and blueberries? This Banana Blueberry Coffee Cake is kinda like breakfast and dessert all in one. I just had to tell you about it!
It’s super soft and full of juicy berries. I love how the sweet banana makes it extra moist. And oh, that little crumb topping is the best part.
When we eat it warm, it feels like a big comfy hug. We always end up cutting bigger slices because, well, we just can’t help it!
So, wanna bake it with me? Let’s make this yummy cake and share some happy bites together!

Why You’ll Love This Banana Blueberry Coffee Cake Recipe
- Moist and Flavorful: The combination of mashed bananas and sour cream makes this cake incredibly moist, while the blueberries burst with flavor in every bite.
- Perfect for Any Occasion: Whether it’s a casual weekend breakfast, a holiday brunch, or just a cozy treat to enjoy with your morning coffee, this cake fits every occasion.
- Make-Ahead Friendly: You can easily prepare this coffee cake the day before, allowing all those flavors to meld together. It’s perfect for meal prep!
- Family-Friendly: With its delightful mix of fruity flavors, this cake will quickly become a favorite among both kids and adults.
- Filling & Satisfying: The combination of bananas, blueberries, and a light crumb topping makes this cake a filling and satisfying treat.
Required Kitchen Tools
Before you dive into making this mouthwatering coffee cake, make sure you have these kitchen tools:
- Mixing Bowls: For combining dry and wet ingredients.
- Measuring Cups & Spoons: Precision is key when baking.
- Electric Mixer: A hand or stand mixer will make mixing the wet ingredients much easier, but you can also mix by hand if preferred.
- 9×9-inch Baking Pan: For baking the cake. You can also use an 8×8 pan for a slightly thicker cake.
- Whisk: For combining dry ingredients.
- Spatula: To fold the ingredients together and scrape the bowl clean.
- Cooling Rack: For cooling the cake after it comes out of the oven.

Ingredients
Here’s a complete list of ingredients to create the most delicious coffee cake. Exact measurements are listed in the recipe card below:
For the Cinnamon Brown Sugar Crumble
- Light Brown Sugar: ½ cup, packed. This will add sweetness and a lovely caramelized flavor to the crumb topping.
- Walnuts: ¼ cup, chopped (optional). You can skip this if you’re not a fan of nuts or have allergies, but they add a nice crunch.
- All-Purpose Flour: 1 cup. This is the base of your crumble, giving it structure.
- Cinnamon: ½ teaspoon. Adds a warm, comforting spice to the topping.
- Salt: ⅛ teaspoon. Helps balance the sweetness of the crumble.
- Unsalted Butter: ½ cup, melted. This helps bind the crumble ingredients together and gives it a rich flavor.
For the Coffee Cake
- Unsalted Butter: ½ cup, melted and slightly cooled. Butter is key to making this cake moist and flavorful.
- Banana: 1 medium, ripe and mashed. This adds moisture and natural sweetness to the cake.
- Blueberries: 1 ¼ cups, fresh or frozen. Blueberries bring a burst of flavor and color to this coffee cake.
- Light Brown Sugar: ½ cup, packed. A slightly richer sweetness compared to regular white sugar.
- Granulated Sugar: ½ cup. Helps balance the sweetness and ensures the cake rises.
- Lemon Zest: 1 teaspoon (optional). Adds a lovely citrusy brightness to the cake.
- Vanilla Extract: 2 teaspoons. Enhances the overall flavor of the cake.
- Large Eggs: 2, at room temperature. Eggs help the cake rise and provide structure.
- Sour Cream: ½ cup, at room temperature. Adds moisture and richness, ensuring a tender crumb.
- All-Purpose Flour: 1 ½ cups. This is the main dry ingredient that will hold the cake together.
- Baking Powder: 1 teaspoon. This helps the cake rise.
- Baking Soda: ¾ teaspoon. Works with the sour cream to give the cake a nice lift.
- Salt: ½ teaspoon. Balances out the sweetness and brings all the flavors together.

Step-by-Step Instructions for Banana Blueberry Coffee Cake
Step 1: Prepare the Cinnamon Brown Sugar Crumble
- Combine Dry Ingredients for Crumble: In a medium-sized bowl, mix the light brown sugar, chopped walnuts (if using), all-purpose flour, cinnamon, and salt.
- Add Butter: Pour in the melted butter and stir the mixture together. It should resemble wet sand, and the butter should evenly coat the dry ingredients.
- Set Aside: Set the crumble topping aside while you prepare the rest of the cake.
Step 2: Prepare the Banana Blueberry Coffee Cake Batter
- Preheat the Oven: Preheat your oven to 350°F (175°C) and grease a 9×9-inch baking pan or line it with parchment paper.
- Mash the Banana: In a small bowl, mash the ripe banana with a fork until smooth. Set it aside.
- Mix Wet Ingredients: In a large mixing bowl, beat the melted butter, mashed banana, and both sugars together until smooth and creamy. Add the eggs one at a time, beating well after each addition. Then stir in the vanilla extract and lemon zest (if using).
- Add Sour Cream: Mix in the sour cream until fully combined. The mixture will be thick and smooth.
Step 3: Combine Dry Ingredients
- Whisk Dry Ingredients: In another bowl, whisk together the all-purpose flour, baking powder, baking soda, and salt.
- Add Dry Ingredients to Wet Ingredients: Slowly add the dry ingredients to the wet ingredients, mixing gently until just combined. Be careful not to overmix, as this could lead to a dense cake.
- Fold in Blueberries: Gently fold in the blueberries with a spatula. If using frozen blueberries, don’t thaw them to prevent them from bleeding into the batter.
Step 4: Assemble the Cake
- Pour Batter into Pan: Transfer the cake batter into the prepared baking pan and spread it out evenly.
- Top with Crumble: Evenly sprinkle the cinnamon brown sugar crumble mixture over the top of the batter.
Step 5: Bake the Coffee Cake
- Bake: Place the pan in the preheated oven and bake for 45-50 minutes, or until a toothpick inserted into the center comes out clean or with just a few moist crumbs.
- Cool: Allow the cake to cool in the pan for 10 minutes, then transfer it to a wire rack to cool completely.

How to Serve Banana Blueberry Coffee Cake
This coffee cake is perfect for so many occasions! Here’s how I love to serve it:
- For Breakfast: Serve a warm slice with your favorite coffee or tea for the perfect breakfast treat.
- For Brunch: This cake is a hit at brunches. Pair it with fresh fruit, eggs, and a side of bacon for a complete meal.
- For Dessert: Enjoy a slice for dessert with a scoop of vanilla ice cream or a dollop of whipped cream.
- For Snack: Keep a few slices in an airtight container for a delicious snack throughout the week.
Storing Banana Blueberry Coffee Cake
- Leftovers: Store leftover coffee cake in an airtight container at room temperature for up to 3 days. If you have any leftover topping, you can keep it in a separate container and sprinkle it on top of individual servings when serving.
- Freezing: If you’d like to store it longer, you can freeze the coffee cake for up to 3 months. Wrap it tightly in plastic wrap and aluminum foil, or place it in an airtight freezer-safe container. When ready to eat, simply thaw it at room temperature for a few hours or heat individual slices in the microwave.
Banana Blueberry Coffee Cake
(Per serving, about 1 slice if cake yields 12 slices)
Nutrient | Amount |
---|---|
Calories | ~260 kcal |
Total Fat | ~10g |
Saturated Fat | ~6g |
Cholesterol | ~55mg |
Sodium | ~160mg |
Total Carbs | ~40g |
Dietary Fiber | ~2g |
Sugars | ~20g |
Protein | ~4g |
Vitamin C | ~4% DV |
Calcium | ~6% DV |
Iron | ~8% DV |
Potassium | ~180mg |
Banana Blueberry Coffee Cake Recipe
Course: Uncategorized9-12
servings20
minutes45
minutes~260
kcalIngredients
- For the Cinnamon Brown Sugar Crumble
½ cup light brown sugar, packed
¼ cup walnuts, chopped (optional)
1 cup all-purpose flour
½ teaspoon cinnamon
⅛ teaspoon salt
½ cup unsalted butter, melted
- For the Coffee Cake
½ cup unsalted butter, melted and cooled
1 medium banana, ripe and mashed
1 ¼ cups blueberries, fresh or frozen
½ cup light brown sugar, packed
½ cup granulated sugar
1 teaspoon lemon zest (optional)
2 teaspoons vanilla extract
2 large eggs, room temperature
½ cup sour cream, room temperature
1 ½ cups all-purpose flour
1 teaspoon baking powder
¾ teaspoon baking soda
½ teaspoon salt
Directions
- Prepare the Crumble: Mix the brown sugar, walnuts, flour, cinnamon, and salt. Add melted butter and combine until crumbly.
- Prepare the Batter: In a bowl, beat the melted butter, banana, sugars, eggs, vanilla, and sour cream. Add the flour, baking powder, baking soda, and salt. Mix until just combined.
- Fold in Blueberries: Gently fold the blueberries into the batter.
- Assemble and Bake: Pour the batter into a greased 9×9 pan. Top with the cinnamon crumble. Bake at 350°F for 45-50 minutes.
- Cool and Serve: Let the cake cool before slicing. Enjoy warm or at room temperature.
FAQs
Can I use frozen blueberries for this recipe?
Yes! Frozen blueberries work perfectly, but make sure to add them directly to the batter without thawing to prevent them from bleeding.
Can I make this coffee cake ahead of time?
Yes! You can prepare the batter and the crumble the night before, then bake the cake the next morning. The flavors will meld together beautifully.
How can I make this cake gluten-free?
To make this coffee cake gluten-free, substitute the all-purpose flour with a gluten-free flour blend.
Can I add other fruits?
Absolutely! Feel free to experiment by adding other fruits like strawberries, raspberries, or blackberries for a delicious twist.
Conclusion
This Banana Blueberry Coffee Cake is a must-try recipe for anyone who loves a moist, flavorful cake that’s filled with sweet bananas and juicy blueberries. The cinnamon brown sugar crumble topping adds the perfect crunch, making it a crowd-pleasing treat for any occasion. Whether you’re serving it at brunch or enjoying a slice with your afternoon tea, this coffee cake is sure to be a hit every time.