- 1 prepared 9-inch single pie crust
- 1/4 cup butter
- 1 bunch green onions, chopped
- 3 cloves garlic, chopped
- 1 slice turkey bacon, cut into 1/2-inch pieces
- 1 (9 ounce) bag fresh spinach
- 1 (3.5 ounce) package shiitake mushrooms, sliced
- 1/2 cup chopped broccoli florets
- 1/4 cup shredded sharp Cheddar cheese
- 4 eggs, beaten
- 3/4 cup milk
- 1/2 teaspoon sea salt
- 1/2 teaspoon black pepper
- 1/2 cup shredded sharp Cheddar cheese
- Preheat oven to 375 degrees F (190 degrees C).
- Fit pie crust into a 9-inch pie dish.
- Melt butter in a large skillet over medium heat; cook and stir green onions and garlic until green onions are softened, about 5 minutes. Cook and stir turkey bacon in the green onion mixture until fragrant.
- Stir spinach, shiitake mushrooms, and broccoli into green onion mixture; cook and stir vegetables until softened, 5 to 7 minutes. Mix in 1/4 cup Cheddar cheese.
- Spoon vegetable mixture into the pie crust.
- Beat eggs, milk, sea salt, and black pepper together in a bowl; pour egg mixture gently over vegetable filling, slightly stirring eggs into the filling to combine.
- Bake in the preheated oven for 15 minutes; sprinkle 1/2 cup Cheddar cheese over the top of the quiche and bake 10 additional minutes. Cover quiche with aluminum foil and bake until quiche has set and a toothpick inserted into the quiche comes out clean, about 10 more minutes.
- Allow quiche to cool for 5 minutes before serving.