Step 1

I like to make sure my pie dough is prepared before I begin the quiche. Make pie dough the night before because it needs to chill in the refrigerator for at least 2 hours before rolling out and blind baking (next step). And here’s a time-saving tip– as the crust blind bakes, you can get started on the filling which begins with step 7.

Step 2

On a floured work surface, roll out one of the disks of chilled dough (freeze the other for another time). Turn the dough about a quarter turn after every few rolls until you have a circle 12 inches in diameter. Carefully place the dough into a 9-inch pie dish. Tuck it in with your fingers, making sure it is completely smooth. Chill the pie crust in the refrigerator for at least 30 minutes. (And up to 5 days. Or freeze for up to 3 months. Cover the pie crust with plastic wrap if chilling for longer than 30 minutes or if you’re freezing it. If you freeze it, let it thaw for a couple hours in the refrigerator before continuing.)

Step 3

While the crust is chilling, preheat oven to 400°F (204°C).

Step 4

Line the chilled pie crust with parchment paper or aluminum foil. (Crunch up the parchment paper first so that you can easily shape it into the crust.) Fill with pie weights or dried beans. Bake until the edges of the crust are starting to brown, about 15-16 minutes. Remove pie from the oven and carefully lift the parchment paper/aluminum foil (with the weights) out of the pie. Prick holes all around the bottom crust with a fork. Return the pie crust to the oven and bake until the bottom crust is just beginning to brown, about 7-8 minutes.

Step 5

Remove crust from the oven. (You can partially pre-bake the crust up to 3 days ahead of time. Cover cooled crust tightly and refrigerate until ready to fill.)

Step 6

Reduce oven temperature to 350°F (177°C).

Step 7

If your frozen spinach is not already thawed, thaw it in the microwave per box directions. Drain the spinach in a colander while you prepare the rest of the ingredients.

Step 8

Place sliced mushrooms in a skillet coated with 1 teaspoon olive oil or nonstick spray, add the garlic, and a sprinkle of salt and pepper. Turn the heat on to medium-high and sauté the mushrooms until they release all of their moisture and no more water remains on the bottom of the skillet, about 6-7 minutes.

Step 9

Whisk the eggs, milk, and parmesan cheese together until combined. Sprinkle with a pinch of salt and pepper. Set aside.

Step 10

Blot and squeeze the rest of the water out of the thawed spinach. Spread spinach on warm pre-baked pie crust. Add the cooked mushrooms and shredded cheeses. Pour the egg mixture on top. If desired, sprinkle the top lightly with more parmesan cheese and/or salt and pepper.

Step 11

Bake the quiche until the center is just about set, about 50-60 minutes. Don’t over-bake. Use a pie crust shield to prevent the pie crust edges from over-browning. Cool for 15 minutes before slicing and serving. Or you can cool the quiche completely before serving– it’s fantastic at room temperature!

Step 12

This quiche makes great leftovers! Cover tightly and store in the refrigerator for up to 4 days.