What's should i make for dinner?

I have a pound and a half of hamburger thawing, and trying to figure out what to do with it. I made meatloaf on Friday, so don't want to do it again. I got one onion, 2 Russet potatoes, 1 sweet potato, RIce a Roni, milk, eggs, bread crumbs, ketchup, and spices. Don't want to go to the store. What should I cook?