Prep your cups. Set out 8–10 small jars, ramekins, or a muffin tin lined with silicone or paper liners.
Clear space in the fridge for chilling.
Make the crust. In a bowl, mix the crushed crackers, melted coconut oil or butter, sweetener, and a pinch of salt until it resembles damp sand. Press 1–2 tablespoons into the bottom of each cup. Use the back of a spoon to compact.
Set aside.
Soften the cream cheese. In a mixing bowl, beat the light cream cheese with a hand mixer until smooth and fluffy. This prevents lumps later.
Add yogurt and flavor. Beat in the Greek yogurt, vanilla, lemon juice, and salt until silky. Taste and adjust lemon or vanilla as needed.
Fold in protein and sweetener. Sprinkle in the protein powder and your sweetener.
Mix on low at first to avoid clumps, then increase speed until fully smooth. If it looks too thick, add 1–2 tablespoons milk or water. If too thin, add 1–2 teaspoons more protein powder.
Assemble the cups. Spoon or pipe the cheesecake filling over the crusts, dividing evenly.
Smooth the tops with the back of a spoon.
Chill to set. Cover and refrigerate for at least 2 hours, preferably 4. The protein and dairy firm up as they chill, creating that classic cheesecake texture.
Add toppings. Just before serving, top with berries, compote, chocolate shavings, or nuts for crunch and color.
Serve and enjoy. These are best cool but not ice-cold. Let them sit at room temperature for 5–10 minutes for the creamiest bite.