1
Bake the frozen pie crust then set aside.
2
Sauté the onion in olive oil, followed by the garlic.
3
Whisk together the half-and-half, eggs, egg yolk, salt, pepper, and crushed red pepper.
4
Add the onion and garlic mixture to the pre-baked pie crust. Sprinkle the shredded cheese and add the spinach. Pour the half-and-half and egg mixture over the top. Bake and let cool before slicing and serving.