Baked Fennel Gratin - Sugar-Free Mom

Ingredients

• 1 fresh fennel bulb, sliced
• 1 cup sweet yellow pepper, sliced
• 1 cup sweet red pepper, sliced
• 1/4 cup Parmesan, grated
• 1 tablespoon olive oil
• 1/4 cup mozzarella, part-skim, shredded
• 2 scallions, chopped or 1/4 cup onion chopped
• salt/pepper to taste