Beat 6 eggs. Add to the bowl, 1 qt milk, 1/2 - 3/4 cup sugar, 1 tsp vanilla. Place 3 1/2 cups dry bread cubes (about six thick slices or so), in a large and deep baking dish.
Pour egg mixture over all. Bake in a 325 degree oven for 40 to 45 minutes or till a knife inserted near center comes out clean. Cool slightly before serving. Serve as is, with a sauce or just some whipped cream.