Moist Banana Crumb Cake with Cinnamon Streusel

Banana Crumb Cake

Banana Crumb Cake brings together the best qualities of banana bread and crumb-topped coffee cake in an easy, crowd-pleasing recipe. Ripe bananas keep the cake tender and naturally sweet, while the brown sugar and cinnamon crumble adds texture and a warm finish. It’s ideal for breakfast, brunch, potlucks, or any time you want a homemade treat that feels both familiar and special.

Why You’ll Love This Dish

• Makes the most of overripe bananas – Turn soft, spotted bananas into a moist cake bursting with banana flavor instead of tossing them.
• Feeds a crowd – Baked in a 9×13 pan, it slices easily for family breakfasts, brunch gatherings, or bake sales.
• Soft cake with a crunchy topping – A generous crumb layer and oats on top give every bite pleasing contrast and depth.
• Simple pantry ingredients – Most items are staples you likely already have at home, so it’s quick to prepare.
• Versatile for breakfast or dessert – Serve it with coffee in the morning or as a sweet finish after dinner.
• Easy to make ahead – Bake earlier in the day and warm slices before serving for that just-baked appeal.

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Recipe Shopping List

Before you begin, check your pantry for these essentials. Quantities are provided in the recipe card below.

• Cold butter – Used in the crumb topping to create a chunky, buttery texture. Cold cubed butter works best for the streusel.
• Light brown sugar – Adds a soft caramel note to the crumb and pairs beautifully with banana and cinnamon.
• All-purpose flour – Provides structure for both the cake and the crumb topping.
• Cinnamon – Warms the crumb without overpowering the banana flavor; optional nutmeg for variation.
• Old-fashioned oats – Folded into the top crumb for extra texture and a hearty finish.
• Baking powder – Ensures a light rise and prevents a dense crumb.
• Salt – Balances sweetness and enhances the banana flavor.
• Overripe bananas – The primary flavor and moisture source; soft, spotty bananas are best.
• Sugar – Sweetens the cake batter and contributes to a tender crumb.
• Eggs – Provide structure and richness; room temperature eggs blend more evenly.
• Vanilla extract – Rounds out the flavor profile.
• Milk – Keeps the batter smooth and the finished cake tender; whole milk is ideal.
• Heavy cream – Adds richness to the batter and to the glaze base; half-and-half can be substituted for the glaze if needed.
• Powdered sugar – For a simple glaze to finish the cake with a touch of sweetness.

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How To Make This Recipe

Below is an overview of the process so you know what to expect. The full, precise recipe with ingredient amounts and step-by-step instructions is in the recipe card further down.

1. Prep the pan and oven – Preheat to 350°F and spray a 9×13-inch pan with baking spray or line it with parchment.
2. Make the crumb – Cut cold butter into the brown sugar, flour, and cinnamon until crumbly. Reserve a portion of the crumb and stir oats into it for the top layer.
3. Combine dry ingredients – Whisk together flour, baking powder, and salt in a separate bowl.
4. Mix the wet ingredients – Puree ripe bananas in a mixer or bowl, then cream in the softened butter and sugar. Add eggs and vanilla and mix until combined.
5. Finish the batter and assemble – Fold the dry ingredients and milk/cream into the banana mixture. Spread half the batter in the pan, sprinkle half the crumb over it, spread the remaining batter, then finish with the oat-studded crumb on top.
6. Bake and glaze – Bake 50–60 minutes, until a tester comes out with a few moist crumbs. Cool for 15 minutes, then drizzle with a simple powdered sugar and cream glaze. Serve warm for best texture.

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More Banana Recipes

• Banana Coffee Cake
• Traeger Banana Bread
• Cinnamon Swirl Banana Bread
• Banana Pudding Poke Cake
• Easy Banana Bread Muffins

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