When you’re craving a decadent dish like fettuccine alfredo, your best bet is to make smart swaps to slash calories. For the sauce, choose skim milk, fat free cream cheese and reduced fat Parmesan. For the noodles, choose whole grain fettuccine or vitamin C-packed spaghetti squash. Regularly substituting processed foods with fresh fruits, vegetables and whole grains is a great step in improving your overall health.