01 -
Preheat your oven to 375°F (190°C). Remove the pie crust from the fridge to soften slightly.
02 -
In a large bowl, whisk together the eggs, heavy cream, salt, and black pepper until smooth.
03 -
Stir in the cheddar, mozzarella, and Swiss cheeses, along with the diced yellow and chopped green onions.
04 -
Roll out the pie crust and press it into a 9-inch (23 cm) pie dish. Crimp the edges with a fork or your fingers if desired.
05 -
Pour the egg mixture into the prepared pie crust. Place the quiche in the oven and bake for 38–40 minutes, or until the center is fully set and no longer jiggles.
06 -
Let the quiche cool for 8–10 minutes before slicing. Serve warm or at room temperature.