This goes very well with almost any dinner you put on the table.
Peel and slice the cucumber. Scrub and slice the zucchinis, but do not peel. On the bottom of a 6-cup casserole, spread 3 slices of the crumbled bread. Arrange a layer of cucumber and zucchini over the bread. Dot this with 1 tablespoon butter or margarine; sprinkle with salt and pepper. Follow with another layer of vegetables, dot with 1 tablespoon butter and sprinkle with seasonings. Cover with crumbs from the remaining 2 slices of bread, and dot with the remaining tablespoon of butter or margarine. Pour the milk over all. Bake for 45 minutes in a 350 degree oven.