This is the perfect side dish on a chilly Autumn evening. The apples give it just the right amount of sweetness, and it smells heavenly cooking. I actually cooked this in a smaller oval casserole dish and used 2 sweet potatoes and 3 apples, so obviously the amounts are very flexible. Just reduce the other ingredients and make sure you use enough OJ so that it covers about 2/3 of the sweet potatoes and apples. Yum! I got this wonderful recipe from my friend Shell Marr.