Arrange the bread on the bottom of a 9 x 13-inch casserole dish, overlapping the slices slightly.
In a large mixing bowl, combine the eggs, egg whites, milk, and mustard. Blend well and set aside.
In a food processor blend the Low-Fat Blend, Parmesan, garlic, pepper, parsley, and rosemary. Pour into the egg mixture and stir until well combined. Pour over the bread and press the bread down, as it tends to float. Cover with plastic wrap, and place in the refrigerator for 6 to 8 hours or overnight; the bread should be completely soaked with the mixture.
Preheat the oven to 375°. Remove the strata from the refrigerator; place the vegetables on the surface, then push them into the egg mixture; they should be covered. Top with the Parmesan shards.
Bake the strata for 1 hour, or until it is browned and a knife inserted in the center comes out clean. Serve hot.