Place proportionate amounts of broccoli, cauliflower, cubed ham, mushrooms and cheese in an 11"x7" baking dish.
Mix the milk, flour and egg in a blender and pour over broccoli mixture. Season with garlic, salt and pepper.
Place in a preheated oven at 400 degrees for approximately 30 to 45 minutes. Remove from oven and allow to stand for 5 to 8 minutes before serving.