1. Place the yogurt in a yogurt strainer or a mesh strainer lined with a paper coffee filter, place in refrigerator and allow to drain for several hours or overnight.
2. Preheat oven to 375 degrees, lightly brush the tart shells with egg white and bake for 5 minutes, cool completely.
3. In a blender container, combine the cottage cheese, drained yogurt, sweetner, vanilla and cinnamon.
4. Divide evenly into the tart shells, place in refrigerator and allow to set for 2 to 3 hours.
5. Place the fruit spread in a small microwave safe bowl and warm; mix the sliced strawberries and fruit spread, cover and refrigerator.
6. When ready to serve, spoon the strawberry mixture on top of the tarts and enjoy.