10-Minute Italian Zucchini Noodle Skillet with Sausage

coconut oil (or olive oil)

medium yellow onion, thin sliced

-pint grape tomatoes, sliced in half

fully cooked Italian sausage links, sliced into coins

medium zucchini, (or 3 large)

fresh Parmesan cheese, shredded

salt and pepper (to taste)