Grease a 13x9x2-inch baking dish or 3-quart casserole. Place uncooked ravioli evenly in dish. Sprinkle evenly with tomatoes. Top evenly with cheeses; set aside. Whisk eggs and milk together until combined. Pour over layers in dish. Cover; chill overnight. Preheat oven to 350 degree F. Bake, uncovered, about 40 minutes or until top is golden and center is set. Let stand 10 minutes before serving. Sprinkle with basil just before serving. Makes 12 servings.