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Two pieces of banana bread coffee cake stacked on a white plate.

High Altitude Banana Bread Coffee Cake

Heather Smoke
This incredibly moist banana bread coffee cake is spiced with cinnamon and nutmeg, topped with buttery brown sugar crumb topping.

All recipes on Curly Girl Kitchen are developed for high altitude at 5,280 feet. See FAQs for adjusting to higher or lower elevations.

5 from 6 votes
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Course Breakfast
Cuisine American
Servings9 -16

Ingredients
 

Cake

  • 5 tbsp unsalted butter, melted
  • cup dark brown sugar, lightly packed
  • 2 large eggs
  • 1 tsp vanilla extract
  • 1 cup mashed bananas, from 2-3 very ripe bananas
  • 1 ⅓ cups all-purpose flour, spooned and leveled
  • 1 ½ tsp baking powder
  • ¼ tsp baking soda
  • ¼ tsp coarse Kosher salt (if using table salt, use half the amount)
  • ½ tsp ground cinnamon
  • ¼ tsp ground nutmeg

Topping

  • 1 ½ cups all-purpose flour, spooned and leveled
  • cup granulated sugar
  • cup dark brown sugar, lightly packed
  • ½ tsp ground cinnamon
  • ¼ tsp ground nutmeg
  • ¼ tsp coarse Kosher salt (if using table salt, use half the amount)
  • ½ cup unsalted butter, melted

Instructions
 

Cake

  • Preheat the oven to 350 F, and spray a 9×9 inch baking pan with non-stick spray.
  • In a large mixing bowl, whisk together the melted butter, brown sugar, eggs, vanilla and mashed bananas.
  • Separately, sift together the flour, baking powder, baking soda, salt, cinnamon and nutmeg. Add the dry ingredients to the wet, and stir together with a spatula, just until moistened. The batter will be thick.
  • Spread the cake batter evenly into the prepared pan.

Topping

  • In a bowl, combine the flour, sugar, brown sugar, cinnamon, nutmeg and salt. Drizzle with the melted butter and toss together with a fork until moistened and crumbly. Sprinkle over the cake batter.
  • Bake the cake on the center oven rack for about 30 minutes, until a toothpick or cake tester inserted in the center comes out clean.
  • Cool for 10-15 minutes, and serve warm.

Notes

  • Leftover coffee cake should be stored in an airtight container for up to 5 days.
  • Make this cake ahead by baking it the night before!  Warm up pieces by microwaving for 15-20 seconds on 50% power for a just-baked texture.
Keyword Banana Bread, Coffee Cake, Crumb Cake
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