Preheat oven to 375°.
In large bowl, combine soup, sour cream, milk, seasoned salt, vegetables, 1/2 cup cheese and 1/2 can French Fried Onions.
Spoon into 8x 12-inch baking dish.
Bake, covered, at 375° for 40 minutes or until vegetables are done.
Top with remaining cheese and onions; bake, uncovered, 3 minutes or until onions are golden brown.