Preheat the oven to 350 degrees, and thoroughly grease a loaf pan.

In a mixing bowl, combine the butter and Swerve sweetener, beat until smooth and creamy.

Add in the eggs, sour cream and heavy whipping cream. Mix until combined.

Mix in the almond flour, baking powder, baking soda, xanthan gum, lemon extract, almond extract, vanilla extract, a pinch of salt, and the zest from both a lemon and an orange. Beat on high until they are blended well.

Pour into the greased loaf pan, and bake for 35-40 minutes, or until cooked through and browned on top.

Slice into 8 equal pieces and serve, or store in an airtight container in the fridge.