1. Mix together ground beef, sausage, spinach, crused crackers, egg whites and 1 tsp basil in medium bowl unti well blended. Shape into 16 meatballs.
2. Heat medium non stick skillet over medium high heat until hot. Coat skillet with non stick cooking spray. Add meat balls. Cook 5 minutes or until beginning to brown turning frequently. (Use a fork and a tablespoon for easy turning). Add spaghetti sauce and remaining basil. Bring to a boil over medium high heat. Stir gently. Reduce heat. Cover. Simmer 7 - 8 minutes or until meatballs are firm and no longer pink in center.
3. Preheat broiler. Place bread under broiler until lightly toasted. Rub cut sides of bread with cut sides of garlic. Place 4 meatballs on each bread slice. Top with equal amounts of sauce.