1. Combine orange juice, soy sauce and garlic powder in a deep bowl, stir. Add spareribs to bowl, cover and marinate overnight.
2. 2 hours before serving - heat oven to 325 degrees.
3. Place spareribs in pan flat, pour marinade mixture over spareribs. Place pan in oven.
4. 45-60 minutes later remove some of the juice (about 1 cup). Then turn spareribs over and lower oven to 300 degrees. Cook 30-45 minutes more.
5. Makes 4 to 6 servings.