If your crust is frozen, remove from the freezer and allow to come to room temperature

Preheat oven to 450F and roll pie crust into a pie plate and press into place

To pre-bake crust you can either line it with parchment and fill with raw beans or pie beads OR pierce the bottom of crust with a fork several times

Place in the oven to bake at 450F for 13 minutes

While the crust bakes heat the oil over med-low heat in a frying pan and add the spinach to the pan

Cook the frozen spinach until warmed through pressing down on the spinach regularly with a spatula to release any excess moisture

Remove the crust from the oven and turn off the oven, allow the warm crust to cool

Whisk together eggs, milk and salt until a smooth creamy mixture remains

Preheat the oven to 350F - this won't take long since your oven should already be hot

Fill the quiche crust with the spinach, feta, and sun dried tomatoes 

Pour the egg mixture into the crust

Bake at 350F for 35-40 minutes - you want the eggs to be just set 

Remove the quiche from the oven and allow to cool before slicing into 8 slices