Step 1

Place a rack in the center of your oven and preheat the oven to 350 degrees F. Coat a deep 9-inch pie dish with nonstick spray.

Step 2

Prepare any mix-ins (see recipe notes for a broccoli bacon version and the blog post above for more suggestions).

Step 3

In a large mixing bowl, whisk together the eggs, milk, half-and-half, salt, pepper, mustard, and nutmeg.

Step 4

Scatter the mix-ins evenly across the bottom of the prepared pie dish.

Step 5

Sprinkle the cheese on top.

Step 6

Carefully pour the egg mixture into the dish. Place the dish on a rimmed baking sheet. Sprinkle the chives over the top.

Step 7

Bake the quiche on the baking sheet until the center is set, about 35 minutes. It should look puffed and golden at the edges, and when a thin, sharp knife is inserted in the center, the center should be cooked through without visible liquid. Let cool a few minutes. Cut into big wedges. Enjoy warm.