HEAT oven to 375°F.
MIX stuffing mix with half each of the spaghetti sauce and oregano. Add meat; mix well. Pat into 13x9-inch baking dish.
MIX vegetables and remaining spaghetti sauce and oregano. Spoon over meat mixture; cover.
BAKE 25 min. Top with cheese. Bake, uncovered, 10 min. or until meatloaf is done (160°F).