Preheat the oven to 350°F and line a 6-inch springform pan with parchment paper.
In one bowl, mix the dry ingredients. In a separate bowl, whisk together the wet ingredients.
Pour the wet ingredients into the dry mixture and stir with a silicone spatula until combined.
Transfer the batter to the prepared pan, smoothing it out evenly. Bake for 20 minutes.
Remove from the oven and allow the cake to cool for one hour before frosting.
To make the frosting, beat the cream cheese until smooth. Add the powdered sweetener and stevia, mixing well. Gradually add the heavy cream while beating for 3-4 minutes until fluffy.
Carefully remove the cake from the pan and slice it in half.
Frost and decorate as desired. Almond slices and lemon wedges make great toppings!