1. Pour a heaping tablespoon of the crumb mixture into each mason jar. With a small shot glass, press the mixture down into the cup.
2. Then spoon the cheesecake batter on top until the cups are filled about halfway. Place some berries of choice.
3. Then fill the rest of the cups with the remaining batter. Sprinkle the extra crumbs or berries on top.
4. Eat immediately or store in the fridge for up to five days.