Name: cinnamon streusel banana cake
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Cuisine: International
Ingredients: 2 cups all-purpose flour; 1 teaspoon baking soda; 1/2 teaspoon salt; 1 teaspoon ground cinnamon; 1/2 cup unsalted butter, softened; 1 cup granulated sugar; 2 large eggs; 3 ripe bananas, mashed; 1/2 cup plain yogurt; 1 teaspoon vanilla extract; 1/2 cup brown sugar (for streusel); 1/2 cup all-purpose flour (for streusel); 1 teaspoon ground cinnamon (for streusel); 1/4 cup cold unsalted butter, cubed (for streusel); 1/4 cup chopped walnuts (optional, for streusel)

cinnamon streusel banana cake

Published on September 16, 2025

4.8 (245 reviews)

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Prep Time

15 min

Cook Time

45 min

Servings

Why You'll Love This Recipe

✓ Moist Banana Base Ripe bananas give natural sweetness and a tender crumb, so you can cut the added sugar without sacrificing flavor.

✓ Cinnamon‑Spiced Streusel A buttery, cinnamon‑laden crumble adds crunch and aromatic depth that turns an everyday cake into a comforting treat.

✓ One‑Bowl Simplicity All components are mixed in a single bowl, minimizing cleanup while still delivering a bakery‑quality result.

There’s something irresistibly nostalgic about a warm banana cake topped with a crunchy cinnamon streusel. This recipe captures that comfort while staying light enough for everyday indulgence. The bananas provide natural moisture, the spice‑laden crumble adds texture, and the whole loaf bakes up in under an hour—perfect for a quick weekend bake or a weekday breakfast treat.

I first discovered this combination while searching for a way to use overripe bananas without resorting to a dense pudding. The result was a cake that feels both home‑cooked and slightly upscale, making it a hit at brunches, potlucks, and quiet mornings alike.

What sets this cake apart is the balance between sweet and spice, the contrast of soft crumb and crisp topping, and the fact that you only need a handful of pantry staples. Whether you’re a seasoned baker or a beginner, you’ll appreciate the straightforward method and the rewarding flavor profile.

1 tsp baking soda Helps the cake rise and stay tender.

½ tsp salt Enhances flavor without making the cake salty.

½ cup (115 g) unsalted butter, melted Can replace with coconut oil for a dairy‑free version.

¾ cup (150 g) brown sugar Provides caramel notes; can use light brown sugar.

2 large eggs, room temperature Eggs bind the batter and add lift.

1 tsp vanilla extract Adds depth to the banana flavor.

3 ripe bananas, mashed (≈1 ½ cups) The sweeter the bananas, the less extra sugar needed.

½ cup (65 g) rolled oats Gives the streusel a hearty crunch.

¼ cup (50 g) light brown sugar (for streusel) Adds caramel flavor to the topping.

1 tsp ground cinnamon (for streusel) Key spice that ties the cake and topping together.

Instructions

Prepare the pan & preheat

Preheat oven to 350°F (175°C). Grease a 9‑inch loaf pan and line the bottom with parchment for easy release. This prevents sticking and ensures clean edges.

Pro Tip: Lightly dust the pan with flour after greasing for extra non‑stick power.

Mix wet ingredients

In a large bowl combine melted butter, brown sugar, and mashed bananas. Whisk in eggs one at a time, then stir in vanilla until the mixture is smooth and glossy.

Pro Tip: Use room‑temperature eggs to avoid curdling.

Combine dry ingredients

Sift flour, baking soda, and salt into a separate bowl. This ensures even distribution of leavening and prevents lumps that could create dense spots.

Pro Tip: Whisk the dry mix briefly to aerate before adding.

Fold together & add streusel

Gently fold the dry ingredients into the wet mixture until just combined—overmixing creates a tough crumb. In a separate bowl, combine oats, brown sugar, cinnamon, and a tablespoon of melted butter; sprinkle over the batter.

Pro Tip: The streusel should be crumbly, not wet; add a splash more butter if needed.

Bake & cool

Bake for 45‑50 minutes, or until a toothpick inserted in the center emerges clean. Let the loaf rest 10 minutes in the pan, then turn onto a wire rack to cool completely before slicing.

Pro Tip: If the top browns too quickly, loosely tent with foil after 30 minutes.

Expert Tips

Tip #1: Freeze‑Ripe Bananas

If you don’t have naturally ripe bananas, peel and freeze them for 24 hours. Thaw, mash, and they’ll be sweeter and more aromatic.

Tip #2: Use a Kitchen Scale

Weighing flour and butter yields consistent texture. A 10‑gram variance can change the crumb from fluffy to dense.

Tip #3: Add a Pinch of Nutmeg

A tiny pinch of freshly grated nutmeg deepens the spice profile without overpowering the cinnamon.

Storage & Variations

Store the cooled cake in an airtight container at room temperature for up to 3 days, or freeze slices for up to 2 months. For a chocolate twist, stir ½ cup cocoa powder into the dry mix and top with chocolate chips. Adding chopped walnuts to the streusel gives extra crunch and heart‑healthy fats.