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Streusel-Topped Banana Cake

Streusel-Topped Banana Cake

By Rose HattabaughMarch 26, 2025

  • Makes
    Makes 12 to 16 pieces
  • Cook Time
    1 hour 10 minutes
  • Active time plus cooling
    20 minutes active, plus cooling
  • Rating

Often served for breakfast or as an afternoon snack, this cake from southern Brazil originated with German immigrants who brought fruit-filled, streusel-topped cakes with them during the late 19th and early 20th centuries. They adapted their recipes for local produce and this iteration, called cuca in Portuguese, was born. The bananas usually are layered over the cake batter, just under the streusel. During testing, we found that sandwiching them between layers of batter prevented the streusel from absorbing the fruit’s moisture and becoming soft. Leftovers will keep at room temperature for up to two days.

Tip

Don’t skip the step of freezing the streusel. Chilling the mixture ensures it doesn’t melt too quickly in the oven, ensuring a crisp, crunchy topping.

Ingredients
  • For the streusel:
  • 98

    grams (¾ cup) all-purpose flour

  • 107

    grams (½ cup) white sugar

  • 2

    teaspoons ground cinnamon

  • ½

    teaspoon table salt

  • 85

    grams (6 tablespoons) cold salted butter, cut into ½-inch cubes

  • For the cake:
  • 195

    grams (1½ cups) all-purpose flour

  • 2

    teaspoons baking powder

  • ½

    teaspoon table salt

  • 85

    grams (6 tablespoons) salted butter, melted and cooled slightly

  • 107

    grams (½ cup) white sugar

  • 2

    large eggs, room temperature

  • ¾

    cup whole milk, room temperature

  • 2

    teaspoons vanilla extract

  • 2

    ripe but firm medium bananas, peeled and sliced ¼ inch thick

  • Powdered sugar, to serve (optional)

Step 1

To make the streusel, in small bowl, whisk together the flour, sugar, cinnamon and salt. Scatter the butter over the top and, using your fingers, rub it into the dry ingredients until the mixture resembles coarse crumbs. Freeze, uncovered, until ready.

Step 2

To make the cake, heat the oven to 350°F with a rack in the middle position. Mist an 8-inch square metal baking pan or glass baking dish with cooking spray, then line it with a 7-by-14-inch piece of kitchen parchment with the excess hanging over the edges.

Step 3

In a small bowl, whisk together the flour, baking powder and salt. In a medium bowl, whisk the butter and sugar. Whisk in the eggs, milk and vanilla. While whisking, gradually add the dry ingredients and mix until just combined. Pour half of the batter into the prepared pan and spread evenly. Place the banana slices on top, overlapping as needed. Top with the remaining batter, spreading it evenly. Sprinkle the streusel over the batter, evenly covering the surface.

Step 4

Bake until the streusel is golden brown, 45 to 50 minutes if using a metal pan or 55 to 60 minutes if using a glass dish. Cool completely in the pan on a wire rack, about 1½ hours. Using the parchment overhang, lift the cake out of the pan and set on a cutting board. Cut into 12 to 16 squares. If desired, dust with powdered sugar just before serving.