Use ground pork, ground turkey, or ground chicken.  2. Use lean ground beef to reduce your fat intake. 3. Small to medium-sized pasta can be used in place of the orzo. 4. Top this dish with grated mozzarella or cheddar instead of shaved parmesan.  5. Change the seasoning and herbs used in this dish to alter the flavor. Spices such as cayenne pepper can be added for a kick of heat.