Preheat oven to 350°F. In a large oven proof skillet over medium heat, sauté broccoli, mushrooms, onion, tomatoes and pepper with butter until tender.

Meanwhile, in a mixing bowl, beat eggs, water, mustard, thyme, oregano and garlic salt until foamy. Stir in ham and cheeses and pour over vegetable mixture in skillet. Cook for about 5 minutes or until eggs begin to set around edges. Place entire skillet into preheated oven and bake for 30 minutes or until eggs are cooked through. Slice and serve immediately from skillet.