Cut heads off of carrots and wash well. Slice potatoes in half, and half an onion and cut in half, pull pieces apart.
Place veggies in bowl and add chili sauce, seasoning and olive oil. Toss, then rub each piece individually to make sure they are completely coated.
Place on baking sheet in 375° oven and bake for 1 hr. NOTE: Cooking temp could be increased, and baking time reduced if desired. Drizzle a little more O.O. and chili sauce at end of cooking time if desired.