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Overhead view of Key lime coffee cake with white chocolate drizzle on a clear glass plate topped with lime slices

Key Lime Coffee Cake

Key Lime Coffee Cake made with a buttery streusel topping & white chocolate drizzle makes the perfect breakfast or afternoon snack.
Course Breakfast, Dessert
Cuisine American
Keyword coffee cake for brunch, coffee cake recipe, key lime dessert
Prep Time 15 minutes
Cook Time 50 minutes
Total Time 1 hour 5 minutes
Servings 16 servings
Calories 308 kcal

Ingredients

For the Cake:

  • 2 cups all-purpose flour
  • 1 teaspoon baking powder
  • 1 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1 cup sugar
  • 2 large eggs room temperature
  • 3/4 cup plain Greek yogurt
  • 1/2 cup buttermilk
  • 1/4 cup melted coconut oil or vegetable oil
  • 1/2 teaspoon pure vanilla extract
  • 3 Tablespoons fresh key lime juice about 4-5 key limes
  • zest from 2 key limes

Streusel Topping:

  • 1 cup all-purpose flour can substitute with white whole wheat
  • 1/4 teaspoon ground cinnamon
  • zest from 1 key lime
  • 1/8 teaspoon salt
  • 2/3 cup granulated sugar
  • 8 Tablespoons cold unsalted butter cut into ½" pieces
  • 2 Tablespoons shredded unsweetened coconut optional

White Chocolate Drizzle (optional):

  • 1 Tablespoon butter
  • 2 ounces 1 square white chocolate
  • 1 cup powdered sugar
  • 2 Tablespoons milk

Instructions

  1. Preheat oven to 350°F. Coat a 9" springform pan or a 9" x 13" square pan with nonstick cooking spray.
  2. To make the streusel: Stir together flour, sugar, and salt together. Cut in the cold butter using two forks or clean hands, then add the lime zest and coconut, if using.
  3. For the cake: In a medium bowl, whisk together flour, baking powder, and salt; set aside. In a large bowl, beat together the eggs, then add sugar and mix until smooth. Add Greek yogurt, key lime juice, zest, vanilla, oil, and buttermilk, beating well after each ingredient. Gently fold in the flour mixture, stirring until just incorporated. Be careful NOT to overmix.
  4. Scrape batter into the prepared pan and smooth the top. Sprinkle streusel evenly over the batter.
  5. Bake in preheated oven for 45 to 50 minutes, or until a cake tester inserted into the center comes out clean. Allow the cake to cool in the pan for 30 minutes before removing the sides of the springform pan. After 30 minutes, transfer to wire rack to cool completely.
  6. If you've baked the cake in a 9" x 13" pan, serve it right from the pan.
  7. For the white chocolate glaze: Combine butter and white chocolate in a microwave-safe bowl. heat on high, stirring every 15 seconds until smooth. Gradually beat in powdered sugar and milk until desired consistency. Drizzle over cooled cake.
Nutrition Facts
Key Lime Coffee Cake
Amount Per Serving (1 serving)
Calories 308 Calories from Fat 99
% Daily Value*
Fat 11g17%
Saturated Fat 7g35%
Cholesterol 41mg14%
Sodium 152mg6%
Potassium 93mg3%
Carbohydrates 47g16%
Sugar 29g32%
Protein 4g8%
Vitamin A 245IU5%
Vitamin C 0.8mg1%
Calcium 41mg4%
Iron 1.2mg7%
* Nutrition facts are provided as a courtesy using the WPRM recipe calculator. It is best to make your own calculations to ensure accuracy. We expressly disclaim any and all liability of any kind with respect to any act or omission wholly or in part in reliance on anything contained in this website. Percent Daily Values are based on a 2000 calorie diet.