In a large nonstick skillet, heat butter over medium-high heat. Add mushrooms and shallot; cook and stir 4-6 minutes or until tender. Add garlic and pepper; cook 1 minute longer. Remove from pan; keep warm. Wipe skillet clean., In same skillet, cook ham over medium heat 3 minutes. Turn; sprinkle with cheese and bacon. Cook, covered, 2-4 minutes longer or until cheese is melted and ham is heated through. Serve with mushroom mixture. If desired, sprinkle with parsley.