This low carb cake is subtly sweet, flavorful, and packed with blueberries. The moist cake has a tender crumb thanks to butter and heavy cream blended into the batter. This gluten-free cake recipe is low in sugar and carbohydrates.
Preheat oven to 375° F degrees. Grease a 9-in springform pan and set it aside.
Mix the almond flour, brown sugar, baking powder, salt, and lemon zest in a large bowl.
Cut in the butter using a pastry blender or two forks until pea-sized pieces remain.
Mix the egg, heavy cream, and vanilla extract in a separate bowl or liquid measuring cup. Pour the wet ingredients into the dry ingredients. Mix until combined. Fold in the blueberries.
Pour the batter into the prepared baking dish. Smooth and sprinkle the top with turbinado sugar. Bake for 25-30 minutes until a toothpick inserted into the center comes out clean and the top of the cake is golden brown. Allow the cake to cool before removing it from the pan.