Preheat the oven to 375˚F. Heat the olive oil in a large skillet over medium heat. Brown the hash browns, flipping them once (about 3 minutes on each side).
Mold the hash browns into a 9-inch pie plate. Layer the cooked turkey sausage on top of the potatoes then add the shredded cheese. In a separate bowl, whisk
together the eggs, half-and-half, salt, and pepper. Pour over the cheese layer. Bake for 35-45 minutes until cooked through.
Notes
The hash browns do not need to be fully cooked before placing them in the pie plate, and slightly undercooked potatoes will make for a firmer casserole crust.