Cut the tomatoes into slices 1/2" thick.
Arrange on an oven glass platter or in a large shallow greased baking pan and sprinkle each slice with some of the salt, sugar, and pepper.
Bake in a hot oven of 450°F for about 20 min or until tender.
Meanwhile make the Creamed Dried Beef.
Pour over the tomato slices which have been arranged on a hot platter.