In saucepan combine 1/2 cup sugar and water, boil until medium-brown. Place 1 tablespoon in each of 6 custard cups.
In a bowl mix eggs, egg whites, evaporated skim milk, maple syrup, vanilla, 1/3 cup sugar and salt. Pour equal amounts in each custard cup. Place cups in baking pan and add water to reach 1/2" up cups.
Bake 35-40 minutes until knife inserted into the center comes out clean. Turn out upside down on serving plates.