Spinach Mushroom Quiche with Tarragon

Method11 steps · about 1 hr 20 min

1. 1

   Step 1: Preheat oven to 350 degrees F (175 degrees C).

2. 2

   Step 2: Place egg (1) white of 1 egg into a small bowl and whisk with water (1 tablespoon) until foamy. Set the egg yolk aside in a large bowl.

   Uses 1 egg, separated · 1 tablespoon water

3. 3

   Step 3: Fit pie crust into a 9-inch pie dish. Brush egg white mixture over the edges and inside of crust. Poke holes into the inside and up the sides of the crust with a fork.

   Uses 1 prepared 9-inch single pie crust · egg-white glaze

4. 4

   Step 4: Bake crust in the preheated oven until the egg white glaze cooks onto the crust, about 5 minutes.

   Uses egg-white-glazed crust

5. 5

   Step 5: Pour any remaining egg white mixture into the large bowl with the yolk; whisk in 2 more eggs and milk until thoroughly combined. Set egg mixture aside.

   Uses 2 eggs · 1 cup milk · reserved yolk and leftover egg-white glaze

6. 6

   Step 6: Heat canola oil (2 tablespoons) in a large skillet over medium heat; cook and stir mushrooms and onion (½ cup) until the mushroom's liquid has evaporated, 9 to 15 minutes. Season with salt (¼ teaspoon) and black pepper (¼ teaspoon).

   Uses 2 tablespoons canola oil · 1 (8 ounce) package sliced fresh mushrooms · ½ cup chopped onion · ¼ teaspoon salt · ¼ teaspoon freshly ground black pepper

7. 7

   Step 7: Turn off heat and stir spinach into hot mushrooms to wilt. Mix in tarragon, paprika (¼ teaspoon), and cayenne pepper (⅛ teaspoon).

   Uses 1 (6 ounce) bag fresh spinach, chopped · ¼ teaspoon dried tarragon · ¼ teaspoon paprika · ⅛ teaspoon cayenne pepper · cooked mushrooms and onion

8. 8

   Step 8: Gently stir mushroom-spinach mixture into eggs and milk. Fold 1 1/4 cup of white Cheddar cheese into the filling.

   Uses 1 ¼ cups shredded white Cheddar cheese · egg and milk custard · seasoned spinach mushroom mixture

9. 9

   Step 9: Pour mushroom-spinach filling into the prebaked pie crust and arrange slices of zucchini (1 small) in a decorative pattern on top of the filling. Top with 1/4 cup white Cheddar cheese in an even layer.

   Uses 1 small zucchini, thinly sliced into rounds · ¼ cup shredded white Cheddar cheese · prebaked pie crust · cheddar vegetable custard filling

10. 10

    Step 10: Place the quiche onto a baking sheet and bake in the oven until top is lightly browned and a knife inserted into the middle of the quiche comes out clean, 35 to 40 minutes.

    Bake quiche · 40 minUses assembled quiche

11. 11

    Step 11: Allow quiche to cool on the hot baking sheet for 5 minutes before removing to finish cooling on a wire rack until serving temperature, 10 to 15 more minutes.

    Cool on rack · 15 minUses baked quiche