Grease and line an 8 inch springform cake tin with parchment paper.
In a bowl, mix the erythritol and butter together until soft and blended.
Add the egg yolks and vanilla extract and stir thoroughly.
Add the coconut flour, salt, baking powder and beat until combined.
In another bowl, whisk the egg whites until stiff.
Gently fold the egg whites into the cake mixture.
Spoon the mixture into the baking tin and smooth evenly.
CREAM CHEESE LAYER
In a bowl, add the softened cream cheese and beat with the erythritol (or sugar substitute).
Add the egg, vanilla extract, lemon juice, zest and beat until smooth.
Spoon this mixture over the cake mixture into the cake tin and smooth evenly.
Scatter the blueberries over the cream cheese mixture.
For the topping, place the coconut flour, cinnamon and erythritol in a bowl and mix until combined.
Add the butter and mix with your hands, gently, so that the mixture looks like breadcrumbs.
Scatter the topping over the blueberries.
Bake for 40-45 minutes until firm and the top is cooked.
Remove from the oven, allow to cool, then place in the fridge to firm.
Serves 10 slicesNutritional Info per slice: 283 Calories, 24g Fat, 7g Protein, 11g Total Carbs, 5g Fibre, 6g Net CarbsAny nutritional analysis on the website is based on an estimate, calculated by http://nutritiondata.self.com 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.