Begin by melting 2 Tbsp butter in a heavy bottomed pan on medium heat. Add sliced onions to pre-heated pan and saute for 30 minutes stirring occasionally.
While onions are cooking, Turn oven on to High broil. Place frozen hamburgers in oven in an oven safe dish for 6 minutes per side or until a crispy layer forms. Save drippings.
Once onions are browned remove from heat. Make gravy according to packet add in hamburger drippings. Fry egg in remaining butter and according to likeness.
Assemble by placing rice on a serving dish, then hamburger patty, fried egg, sauteed onions, gravy and top with scallions. Enjoy!