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A moist banana snack cake with a buttery cinnamon crumble topping and soft, tender crumb that works for breakfast, merienda, or dessert.
Bananas and crumble are an easy combination when you want something a little more structured than banana bread but still simple enough for an everyday bake. The cake stays soft from the ripe fruit, while the topping adds a buttery layer that gives each slice more texture.
The batter comes together quickly and does not need elaborate mixing. Once the dry ingredients are folded in, the main job is to spread the batter evenly and scatter the crumble so it bakes into a lightly crisp top instead of sinking.
This is the kind of cake that works across the day: warm with coffee in the morning, sliced for snacks in the afternoon, or served plain for dessert. If you have extra-ripe bananas on the counter, it is an especially practical bake.
Soft butter works best when you want a topping that bakes into pebbly clusters instead of melting flat. If your kitchen is warm, chill the crumble briefly before topping the batter.
The bananas also matter here. The riper they are, the sweeter and softer the cake will be, which means you get more flavor without needing extra work in the mixing bowl.
Let the cake cool enough for the crumb to set before slicing. It is especially good with coffee, tea, or a spoonful of plain yogurt alongside.
Keep leftovers covered at room temperature for a day or two, or refrigerate for longer storage. A short reheat will bring back some of the softness in the crumb and topping.
A moist banana snack cake with a buttery cinnamon crumble topping and soft, tender crumb that works for breakfast, merienda, or dessert.

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Preheat your oven to 325°F (160°C) and prep an 8x8 square pan by buttering or lining it with parchment paper.
In a mixing bowl, add the peeled bananas.
Add white sugar, brown sugar, baking soda, and salt. Beat slowly at first, then gradually increase speed to mash the bananas well.
Add sifted flour and oil. Mix until just combined.
In another bowl, mix all-purpose flour, sugar, cinnamon, and butter.
Use your fingers or a pastry cutter to combine until it forms a crumbly texture.
Pour batter into the prepared pan and spread evenly.
Top with the crumble and press it gently to adhere.
Bake for 45–55 minutes or until firm to the touch.
Let cool slightly, then release the cake from the pan and flip it onto a chopping board. Invert again to serve right side up.
6/12/2025
I swapped half the flour for whole wheat and added pecans—still moist and flavorful. Great healthier tweak!
5/11/2025
Made this for a potluck and people thought I bought it from a bakery. Perfect balance of banana and spice.
3/10/2025
Delicious but a bit too sweet for me. I’ll cut back on the sugar next time in both cake and crumble.
2/9/2025
I halved the recipe for a smaller pan and it worked perfectly. The crumble stayed crisp even the next day.
12/8/2024
The texture was spot on—light but moist. I sprinkled extra cinnamon sugar before baking and it smelled heavenly.
11/7/2024
A lovely way to use overripe bananas. Not overly sweet and great with coffee in the morning.
7/6/2024
Turned out amazing and my kids wiped the plate clean. Definitely adding this to my go-to bakes.
5/5/2024
The cinnamon streusel on top is my favorite part. Next time I’ll double the topping!
2/3/2024
Foolproof recipe—moist texture and full of flavor. I added walnuts for crunch and it worked perfectly.
11/2/2023
This was the star of our Sunday brunch! Moist, sweet, and the crumble gives it such a bakery-style finish.
8/14/2023
The cake was delicious though it took almost 10 minutes longer to bake in my oven. Worth the wait though!
7/13/2023
Tasted great but my crumble browned too quickly. Next time I’ll cover with foil halfway through baking.
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Serving Size: 1 slice
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
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