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Marbled Banana Streusel Coffee Cake Recipe

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This marbled banana streusel coffee cake is soft, spiced, and packed with ripe banana flavor, swirled with chocolate, and topped with a crunchy cinnamon crumb — a perfect breakfast or anytime treat.

Ingredients

Scale

Cake:

  • 1½ cups all-purpose flour

  • 1 tsp baking powder

  • ½ tsp baking soda

  • ½ tsp salt

  • 1 tsp cinnamon

  • ½ cup unsalted butter, softened

  • ½ cup sugar

  • ¼ cup brown sugar

  • 2 eggs

  • 1 tsp vanilla extract

  • ¾ cup mashed bananas

  • ¼ cup sour cream or yogurt

Swirl:

  • ½ cup batter from above

  • 2 tbsp cocoa powder

Streusel:

  • ½ cup flour

  • ¼ cup brown sugar

  • 1 tsp cinnamon

  • Pinch of salt

  • 4 tbsp cold butter

  • ¼ cup chopped nuts (optional)

Instructions

  • Preheat oven to 350°F. Prepare a 9-inch baking pan.

  • Mix streusel ingredients until crumbly. Chill.

  • Whisk dry cake ingredients in a bowl.

  • Cream butter and sugars, then add eggs, vanilla, banana, and sour cream.

  • Add dry mix to wet and combine.

  • Reserve ½ cup of batter and mix with cocoa powder.

  • Layer plain batter, then swirl in chocolate mixture. Top with streusel.

  • Bake for 40–45 minutes until a toothpick comes out clean. Cool before serving.

Notes

  • Use very ripe bananas for best results.

  • Add mini chocolate chips for a boost.

  • Freezes beautifully for up to 3 months.

Find it online: https://thefoodaunt.com/marbled-banana-streusel-coffee-cake-recipe/