Bake pastry pie shells according to package
Preheat oven to 375F
Heat oil in a pan. Add onions and saute 2-3 min
Add in mushrooms and saute until tender
Add Spinach, cherry tomatoes, mushrooms, onions into pie crust
Top mixture with vegan cheese
Pour the JustEgg evenly over the mixture
Bake for 40-45 minutes, or until the middle of the quiche is set
Remove from oven and allow quiche to cool for 15 minutes before serving