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star fruit cake
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5 from 5 votes

Upside Down Star Fruit Cake

A low carb verison of upside down cake with star fruit replacing pineapple.
Prep Time15 mins
Cook Time35 mins
Course: Cake, Dessert
Cuisine: Caribbean, Gluten Free, Low carb
Keyword: coconut flour, star fruit recipes
Servings: 8 slices
Calories: 329kcal


Bottom Layer

  • 1 star fruit
  • 2 tablespoons unsalted butter
  • 2 tablespoons allulose or other low carb sweetener
  • 1 tablespoon lime juice


  • ½ cup coconut flour
  • 4 large eggs
  • ½ cup allulose
  • ½ cup butter, unsalted softened
  • 2 tablespoons coconut milk canned
  • 1 tablespoon vanilla extract
  • ½ teaspoon salt
  • ½ teaspoon baking powder


  • Preheat oven to 180C/375F degrees
  • Grease an 8 inch spring form cake tin. Line the bottom with parchment paper


  • Thinly slice the star fruit to about 1 cm in width
  • In a small bowl, melt the butter in the microwave for 30 seconds and add the allulose and lime juice.
  • Dip the sliced star fruit slices into the melted butter mixture.
  • Place the star fruit slices on the bottom of the cake pan.


  • In a large bowl, beat the allulose and butter together until light and fluffy.
  • Add the vanilla extract and eggs, one at a time and whisk well.
  • Add the coconut flour, salt and baking powder and continue to whisk.
  • Gradually add the coconut milk until you have a smooth batter.
  • Pour the cake batter into the star fruit lined baking pan.
  • Bake for 30 -35 minutes until the cake is firm and golden. Check that it is cooked through with a toothpick.
  • Remove from the oven and let cool in the tin for at least 10 minutes.
  • Run a spatula around the outside edges of the cake to loosen it.
  • Place a plate over the cake tin and carefully turn it upside down.
  • Allow the cake to sit on the plate and remove the cake tin.
  • Cool the cake at room temperature before serving.


Makes 8 slices in an 8 inch cake tin. 
The net carbs will be the total carb count minus the fibre count. Carb count excludes sugar alcohols.
Any nutritional analysis on the website is based on an estimate, calculated by Spoonacular from the individual ingredients in each recipe. Variations may occur for various reasons, including product availability and food preparation. We make no representation or warranty of the accuracy of this information


Serving: 1slice | Calories: 329kcal | Carbohydrates: 6.8g | Protein: 4.7g | Fat: 32g | Fiber: 3.8g