Nice stainless stell pot, heat olive oil
heat slightly olive oil, add garlic (don't overcook), onions, parsley then add fresh shrimp, a little butter, then salt, pepper, and lemon squeezed, five minutes tops, then add parmesan or reggiano and voila done!
(hint! I add a little bit of Balsamic vinegar after parsley)
Make sure your pasta is al dente.