Combine corned-beef hash, catsup, and egg. Press into the bottom and sides of the greased 8x1/2-inch round pan. Bake in moderate oven (350°) 30 minutes.
Fill with Lima beans, cooked according to directions on the package and seasoned to taste.
Melt ¼ pound sharp process-American cheese over hot water. Gradually stir in 2 tablespoons milk.