Heat oven to 350º. Spray rectangular baking dish, 11 × 7 × 1 1/2 inches,
with nonstick cooking spray. Cut unpeeled eggplant into 1/2-inch slices.
Place in 3-quart saucepan; cover with water (salted if desired). Heat to
boiling; reduce heat. Cover and simmer 5 minutes; drain and pat dry.

Mix remaining ingredients except cheeses in 2-quart saucepan. Cook over
medium-high heat about 5 minutes, stirring frequently, until slightly
thickened.

Place eggplant in baking dish; top with tomato mixture and cheeses. Cover
and bake 20 minutes. Uncover and bake about 10 minutes longer or until
light brown.