In a medium bowl, beat the Cream Cheese (4 ounce), Butter (4 tablespoon), Natural Sweetener (2 teaspoon), and Vanilla Extract (1 teaspoon) with a hand mixer or in a stand mixer.
In a small bowl, mash the Fresh Blueberries (1/4 cup) thoroughly until no chunks remain. This is important, since chunks will get a weird texture in the freezer.
Fold the berries into the cream cheese mixture using a spatula. You can fully combine the mixture, or leave some swirls for a pretty texture.
Spoon the cream cheese mixture into molds. You can use cupcake liners, ice cube trays, or any other silicone molds you have on hand.
Freeze for at least 2 hours before removing from the molds and serving.