Repeat until crust ingredients are gone. I got ~10 muffins filled with crust.
Once your rhubarb is soft and cooked through, remove from oven and using a fork to break up the strawberry and rhubarb to create a jam. Pour your “jam” into a bowl to cool for about 2 minutes.
Then add your whisked egg white and mix thoroughly with your “jam”.
Use a spoon once again to spoon your jam mixture over your crusts, evenly distributing throughout.