For spaghetti crusts, cook pasta according to package directions; drain. Immediately toss together pasta, the 1 beaten egg, the Parmesan cheese, and 1 tablespoon of the margarine or butter. Divide pasta mixture evenly among 4 greased individual au gratin dishes. Press pasta mixture in bottom and up sides of dishes to form crusts. Set aside.
In a large skillet cook broccoli, carrot, onion, oregano or savory, garlic, and salt in the remaining margarine or butter until vegetables are crisp-tender. Gently stir salmon or tuna into the vegetable mixture.
Divide salmon or tuna mixture evenly between the spaghetti crusts. Combine the 2 beaten eggs and half-and-half, light cream, or milk. Pour evenly over the fish mixture. Cover with foil. Bake in a 350 degree F. oven for 15 minutes. Remove foil; bake for 5 to 10 minutes more or until set. Let stand for 5 minutes before serving. Makes 4 servings.