Remove root end and core from brussels sprouts, cut in half and thinly slice.
Heat oil in skillet on medium-high heat. Add prosciutto. Sauté until beginning to crisp. Add sprouts and garlic; sauté for 3 minutes. Cover pan and cook 2 minutes longer or until sprouts are crisp-tender.
Toss in pine nuts, saute 1 minute and season with salt and pepper.