I'm using Field Roast's Apple and Maple Breakfast Sausage in this recipe. It's packed with flavor and a bit of sweetness which is a nice addition to this quiche. You could substitute in Gardein's Breakfast Sausage, or Beyond Meat's Breakfast Sausage Links. If you don't want to use a storebought sausage you could add in my Smoky Tofu Bacon!