Preheat oven to 400ºF.
Unroll pie crust and press into a 9″ cake, pie, or tart pan.
Dump any (already cooked) leftover meat, cheese, and veggies into the baking dish.
In a medium bowl, combine eggs, milk, seasonings, salt, and pepper. Whisk until smooth.
Pour mixture over meat and cheese in baking dish.
Top with additional cheese (if desired).
Place baking dish on a rimmed cookie sheet and cover the edges of the crust with foil.
Bake in preheated oven for 45-55 minutes
Remove foil and continue baking for 15 minutes, or until middle is set a no longer runny.
Remove pan from oven and let rest for 10-15 minutes before serving.