Using a stand mixer (or handheld) beat the cream cheese until it is smooth.
Add the liquid stevia and beat until well mixed.
Add 1/2 cup of the whipped topping and beat until the mixture is soft and smooth.
Fold in the remainder of the whipped topping and gently mix.
Add 1 cup of the cooled blueberry sauce and stir, gently.
Pour into a 9 -nch springform pan, and smooth out the top.
Chill for at least 2 hours before serving.