Add the cottage cheese, Greek yogurt, sweetener, and vanilla to a blender. Blend on high for 30–40 seconds until completely smooth, creamy, and thick—no graininess. Taste and adjust sweetness if needed. Set aside.
Dice the strawberries and mix with lemon juice and sweetener. Lightly mash ⅓ of the mixture with a fork to create a juicy strawberry 'syrup.' Combine and set aside.
Add 1–2 tablespoons of granola (or your crunch option) to the bottom of each jar. Spoon in a thick layer of the cheesecake mixture. Add a layer of strawberries. Repeat layers until jars are full. Finish with a final spoonful of strawberries on top.
Refrigerate for at least 1 hour for the flavors to develop and the cheesecake layer to thicken naturally. Serve cold.
