Preheat oven to 400°F. Spray a mini muffin tin with non-stick cooking spray. Set aside.
Unroll the pie crust, use a 2" cookie or biscuit cutter to cut rounds from the pie crust.
Place one round in each muffin cup.
Poke the bottom of each crust with a fork twice.
In a large mixing bowl, whisk the eggs, milk, salt, and pepper together.
Pour into the tins until each is full and top with the add-ins, if using
Bake until the tops begin to turn golden brown, about 15-18 minutes. Serve warm or at room temperature.