Topping suggestions: Fat-free or reduced fat sour cream; grated fat-free Cheddar, mozzarella or Monterey Jack cheese; fat-free cottage cheese; sliced scallions; salsa, chow-chow or chutney; chopped green chilies; low-fat chili; spaghetti sauce and grated Parmesan cheese; sautéed mushrooms; cooked chopped broccoli in low-fat cheese sauce.