Follow these simple steps to create your Spinach and Cheese Quiche effortlessly:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Sauté Onions: In a skillet, heat olive oil over medium heat. Add chopped onion and sauté until translucent.
3. Add Spinach: Stir in the chopped spinach and cook until wilted, about 2-3 minutes. Remove from heat and let cool slightly.
4. Prepare Pie Crust: Place the pre-made pie crust in a 9-inch pie dish. Press it neatly into the dish and trim any excess.
5. Mix Eggs and Cream: In a large bowl, whisk together eggs, heavy cream, salt, pepper, and nutmeg until well blended.
6. Add Cheese & Vegetables: Stir in the cooled spinach and onion mixture along with the shredded cheese. Mix until combined.
7. Pour Mixture: Pour the spinach and cheese mixture into the prepared pie crust.
8. Bake: Bake in the preheated oven for 35-40 minutes, or until the quiche is set and lightly golden on top.
9. Cool: Remove from the oven and let it cool for about 10 minutes before slicing.
10. Serve: Cut into wedges and serve warm, or let it cool completely for later servings.

By following these steps, you ensure that your quiche comes out perfectly every time.