Preheat. Preheat the oven to 375
Dough. Be sure to start with thawed dough. Line a 9" pie pan with the dough and fold over any excess dough on the edges. Then, pinch the edges of the crust to create a rippled edge. To do this, pinch the dough between your index and thumb on each hand, then push your pinchers together so that one index finger is between the index and thumb on the other hand. Repeat all the way around the rim of the pie crust. Par bake the crust for 10 minutes, remove it from the oven and set it aside.Keep the oven at 375 °F to bake the quiche. 1 9" pie crust dough
Onion. Peel the onion. Cut off both ends. Slice into ribbons, then finely chop.
1/4 cup finely diced onion
Spinach. Measure spinach.
4 cups raw spinach or 1/2 cup thawed from frozen and well squeezed
Saute. In a skillet, add oil. Heat over low heat and add onions, fresh spinach, and a dash of salt. Allow the spinach to fully wilt and cook down, approximately 1-2 minutes. Remove the onion-spinach mix from the heat. If using frozen spinach, drain it well and it can be added directly to the egg mix without cooking.
1 teaspoon olive oil, 1/2 teaspoon sea salt for eggs + a dash for the spinach and onions
Eggs. Mix the eggs in a large bowl with sea salt and ground black pepper.
8 eggs, 1/8 teaspoon ground black pepper
Thickener. Mix corn starch into 1/2 cup of heavy whipping cream. Then, add this mix to the eggs and the other 1 cups of heavy whipping cream.
1 1/2 Tablespoon corn starch, 1/2 cup heavy whipping cream or other milk to mix with corn starch, 1 cup heavy whipping cream or other milk
Ham. Cut the ham into 1/4" pieces. Add to the eggs.
3/4 cup cubed ham
Cheese. Grate the Swiss cheese. Add 3/4 cup to the eggs.
1 cup shredded Swiss cheese (3/4 in eggs, 1/4 on top)
Mix. Then, fold in the spinach-onion mix into the eggs. Mix all ingredients well.
Pour. Pour the egg mix into the pie crust. If needed, using a spatula, gently move the ham, spinach, and cheese around to evenly distribute the filling.
Top. Sprinkle remaining 1/4 cup of cheese on top of the quiche.
Bake. Keeping the oven at 375 °F, place the pie on the center rack and bake for 40 to 45 minutes until the center is no longer liquid and the egg is slightly firm when pressed with a spoon. The top will be a golden brown.
Stand. The quiche may come out big and puffy, but will deflate. Allow the quiche to stand 5-10 minutes before slicing.
Enjoy! Then, serve immediately.