uncooked jumbo pasta shells • white onion, diced • ground beef or turkey (we use turkey most of the time) • chili powder or homemade taco seasoning • neufchâtel cheese • taco sauce, divided (you decide your level of heat) • shredded cheese of your choice, I've used cheddar, Mexican blend, and Queso Chihuahua • sour cream, lettuce, sliced black olives for garnish