Preheat oven to 375F (190C)
Spray oil in a 1.5 - 2 quart (1.5 - 2 L) casserole or an 8" (2 L) square
baking pan.
Put carrots in a microwave dish and microwave until tender crisp.
Put carrots, zucchini & tomatoes in casserole/baking dish. Sprinkle with
croutons.
Blend cornstarch & milk. Bring to a boil, stirring constantly, cook until
thickened (either on the stove or in the microwave). Whisk in butter until
melted. Add basil, salt & pepper. Pour over vegetables.
Bake uncovered for 20-30 minutes or until bubbly and heated through.
VARIATIONS: Substitute other vegetables. Substitute cornflake crumbs for
croutons.