There’s something so comforting about banana coffee cake.
It has a soft, moist banana cake, a buttery cinnamon walnut crumble, and just the right amount of sweetness.
It’s perfect for breakfast, brunch, or an afternoon coffee break.
This recipe is easy to follow and gives you a bakery-style coffee cake with simple pantry ingredients.
Makes: 9 servings (1 9×9-inch cake)
Prep Time: 20 minutes
Bake Time: 35–40 minutes
Total Time: About 1 hour
Why I Love This Recipe
I started making this banana coffee cake whenever I had bananas sitting on the counter that were too ripe to eat. Instead of making the usual banana bread, I wanted something with a little more texture and a buttery cinnamon topping. The first time I baked it, the smell filled the whole kitchen, and I knew it would become a favorite. Every bite has soft banana cake, crunchy crumble, and warm cinnamon. It feels homemade in the best way.
Here’s why I keep coming back to this recipe:
- The banana keeps the cake incredibly moist.
- The cinnamon crumble adds a crisp, buttery topping.
- It uses simple pantry ingredients.
- It’s great for breakfast, dessert, or coffee time.
- It tastes even better the next day.
What You’ll Need
For the Crumble
- ¾ cup all-purpose flour
- ¾ cup packed brown sugar
- ¾ cup chopped walnuts
- 1 tablespoon ground cinnamon
- ½ teaspoon salt
- ½ cup (1 stick) unsalted butter, melted
For the Batter
- 2 cups all-purpose flour
- 1 teaspoon baking powder
- ½ teaspoon baking soda
- 1 teaspoon salt
- ½ cup packed brown sugar
- ½ cup granulated sugar
- 2 large eggs
- 2 very ripe bananas, mashed
- 1 cup sour cream
- ¼ cup milk
- ¼ cup neutral oil
- 2 teaspoons vanilla extract
Tools You’ll Need
- 9×9-inch baking pan
- Parchment paper
- Mixing bowls
- Medium bowl
- Large bowl
- Whisk
- Rubber spatula
- Measuring cups
- Measuring spoons
- Cooling rack
Substitutions and Variations
- Swap walnuts for pecans.
- Use plain Greek yogurt instead of sour cream.
- Add ½ cup mini chocolate chips.
- Add ½ teaspoon nutmeg for extra warmth.
- Sprinkle coarse sugar over the crumble before baking.
Make Ahead Tips
- Mix the crumble one day ahead and refrigerate.
- Mash the bananas ahead of time and refrigerate.
- Bake the entire cake one day early. It stays moist and tastes even better the next day.
Why This Recipe Works (Quick Science)
Bananas add moisture because they are full of natural sugars and water. Sour cream adds fat and acidity, making the cake soft and tender. Baking powder and baking soda work together to create a light texture. The melted butter coats the crumble ingredients, creating crisp, golden clusters as they bake.
Banana Coffee Cake Recipe
Step 1: Prepare the Pan and Oven
Preheat the oven to 350°F. Grease a 9×9-inch baking pan with butter and line it with parchment paper, leaving extra paper hanging over the sides to make the cake easier to lift out after baking.
Step 2: Make the Crumble
In a medium bowl, combine ¾ cup all-purpose flour, ¾ cup packed brown sugar, ¾ cup chopped walnuts, 1 tablespoon ground cinnamon, and ½ teaspoon salt. Pour in ½ cup melted butter and stir until the mixture forms moist, chunky crumbs. Set aside.
Step 3: Mix the Dry Ingredients
In a large bowl, whisk together 2 cups all-purpose flour, 1 teaspoon baking powder, ½ teaspoon baking soda, and 1 teaspoon salt until evenly combined.
Step 4: Mix the Wet Ingredients
In another large bowl, whisk together ½ cup packed brown sugar, ½ cup granulated sugar, and 2 eggs until smooth. Add 2 mashed very ripe bananas, 1 cup sour cream, ¼ cup milk, ¼ cup neutral oil, and 2 teaspoons vanilla extract. Stir until mostly smooth while leaving a few small banana pieces.
Step 5: Make the Batter
Add the dry flour mixture into the wet banana mixture. Fold gently with a rubber spatula until no dry flour remains. Stop mixing as soon as everything comes together.
Step 6: Layer the Cake
Spread half of the batter into the prepared baking pan. Sprinkle half of the crumble evenly over the batter. Add the remaining batter and gently spread it to the edges. Finish with the remaining crumble, covering the top completely.
Step 7: Bake
Bake at 350°F for 35 to 40 minutes until the crumble is golden brown and a toothpick inserted into the center comes out clean.
Step 8: Cool and Serve
Let the cake cool in the pan for 10 minutes. Lift it out using the parchment paper and cool for another 15 to 20 minutes before slicing into nine squares.
Pro Tips
- Use bananas with lots of brown spots for the sweetest flavor.
- Don’t overmix the batter or the cake can become dense.
- Leave a few small banana pieces for extra texture.
- Let the cake cool before slicing so it stays together.
- Toast the walnuts before adding them to the crumble for even more flavor.
Common Mistakes
- Using bananas that are not ripe enough.
- Overmixing the batter.
- Pressing the crumble into the batter instead of sprinkling it loosely.
- Cutting the cake while it’s still very hot.
- Forgetting to line the pan with parchment paper.
What to Serve With
- Fresh berries
- Hot coffee
- Chai tea
- Vanilla latte
- Whipped cream
- Greek yogurt
- Fresh fruit salad
Leftovers and Storage
Store covered at room temperature for up to 2 days or refrigerate for up to 5 days. Warm individual slices in the microwave for about 15 seconds before serving. Freeze slices in an airtight container for up to 3 months.
Macros Information
Approximate per serving (1 of 9 servings):
- Calories: 435
- Protein: 6g
- Carbohydrates: 52g
- Fat: 23g
- Saturated Fat: 8g
- Fiber: 2g
- Sugar: 28g
- Sodium: 310mg
FAQ
Can I use frozen bananas?
Yes. Thaw them completely and drain any extra liquid before mashing.
Can I make this without walnuts?
Absolutely. Leave them out or replace them with pecans.
Can I freeze banana coffee cake?
Yes. Wrap individual slices well and freeze for up to 3 months.
How do I know when it’s done?
A toothpick inserted into the center should come out clean or with just a few moist crumbs.
Can I use Greek yogurt instead of sour cream?
Yes. Plain full-fat Greek yogurt works very well.
Final Thoughts
This banana coffee cake is one of those recipes you’ll want to bake again and again. The soft banana cake, buttery cinnamon crumble, and crunchy walnuts make every bite rich, comforting, and full of flavor. It’s simple enough for any day of the week but special enough to share with family and friends. If you give it a try, leave a comment and let everyone know how it turned out or share any fun variations you made.
