Spinach Quiche with Chicken

¼ cup shredded Cheddar cheese

1 (9 inch) unbaked pastry shell

1 cup diced cooked chicken

1 cup chopped fresh spinach

½ cup chopped sweet onion (such as Vidalia®)

¾ cup shredded Cheddar cheese

3 eggs

¾ cup half-and-half

½ cup mayonnaise

¼ teaspoon salt

⅛ teaspoon ground black pepper

1 pinch salt-free seasoning blend (such as Mrs. Dash), or to taste

1 pinch herbes de Provence, or to taste

Preheat oven to 350 degrees F (175 degrees C).

Sprinkle 1/4 cup Cheddar cheese in pastry shell. Mix chicken, spinach, onion, and remaining 3/4 cup Cheddar cheese in a bowl; transfer mixture to pastry shell.

Whisk eggs, half-and-half, mayonnaise, salt, black pepper, seasoning blend, and herbes de Provence in another bowl; pour over chicken mixture.

Bake in the preheated oven until a knife inserted into the center comes out clean, 35 to 40 minutes. Let stand for 15 minutes before slicing and serving.