This simple quiche lorraine is packed with flavor! It’s made with onion, bacon, and cheese and with a frozen pie crust to save you time (and energy!) Quiche makes a great addition to your breakfast/brunch spread or can even stand in as an easy lunch or dinner meal. This quiche is quick to make (20 minutes or less of prep time), can be prepped ahead of time, and can be eaten warm or at room temperature.