In a mixing bowl, combine Greek yogurt, nut butter, sweetener, and vanilla extract. Stir until smooth and creamy, ensuring there are no lumps left behind.
Add the protein powder along with your choice of rolled oats or almond flour into the mixture. Toss in the mini chocolate chips and a pinch of salt before mixing everything until well incorporated.
Line a muffin tin with liners to prevent sticking and simplify serving. Spoon the prepared mixture evenly into each muffin cup, filling them about three-quarters full.
Place the muffin tin in the freezer for 1–2 hours or until the cups are firm enough to hold their shape when removed from the tin.
Once frozen, let the cups sit at room temperature for about 5 minutes before serving to soften slightly. Enjoy your healthy treats straight from the freezer or store them for later!