First boil your potatoes in water (cut to take less time to cook). Then once that is started take hamburger and put in a skillet with Italian dressing and seasoned salt. After that have your corn and green beans to mix with your burger. You can drain the grease and season first then add the veggies, or just mix it right in and drain together, so the veggies get the flavor.
Once done, put in a baking dish. Layer the bottom of pan with meat mixture. Mash the potatoes with butter, milk, salt, and pepper. Put along top and add some slices of Velveeta on top.
Cook in the oven for about 10 minutes at 350°F to melt cheese and it's ready to serve.