
In a large skillet coated with cooking spray, brown ham steaks in batches over medium heat; remove and keep warm.
In same skillet, saute onion until tender. Stir in apple juice and mustard; bring to a boil. Add apples. Reduce heat; cover and simmer for 4 minutes or until apples are tender.
Combine cornstarch and water until smooth; stir into apple juice mixture. Bring to a boil; cook and stir for 2 minutes. Stir in sage and pepper. Return steaks to skillet; heat through.