Heat the oil in a large skillet over medium-high heat.
Place the Italian sausages in the pan and brown them on both sides, about 2-3 minutes on each side. They won't be cooked through yet.
Turn the heat down to medium-low. Add a ½ cup of liquid to the skillet and cover the pan. Simmer the sausages until they're cooked through to an internal temperature of at least 160F, which will take about 10-12 minutes. Discard any remaining liquid.
Serve with sauteed peppers and onions, roasted vegetables, salad, pasta, polenta, or rice. Enjoy!
Notes
Italian chicken sausage works great too using this method.
Leave these as whole links or slice them to be used in recipes.
You can use a non-stick skillet but they might not brown as much as cooking in cast iron.
While the internal temperature of sausage is done at 160F, because of the fat content, they taste delicious and juicy up to 180-190F. Cooking them higher than that can lead to chewy and overcooked meat.