
Pre-heat the oven to 350 ℉.
Squeeze the sausage from the casings into a 9- or 10-inch oven-proof skillet, and cook over medium high heat, breaking up with a spatula. Depending on how much fat the sausage releases, you may need to either drain it off or add some olive oil. Add the diced onion and continue cooking until the sausage is cooked through and the onion is translucent.
Season the beaten eggs with the remaining salt and pepper, and pour over the good things in the skillet. Cook for a few minutes, pulling away the edges as they start setting to allow the raw egg to run underneath. Place the skillet in the oven for 15 minutes, or until the egg is set on top and cooked through, but not dry.
Make Ahead Notes: If you want to get a leg up on your brunch preparations, you can cook the sausage and onion mixture the night before, as well as the potato, and refrigerate in covered containers once cooled. I wouldn't cut the potato into cubes until the morning. Just oil the skillet before you begin assembling the dish.
Sausage & Potato Frittata https://urbancottagelife.com/sausage-potato-frittata/