| Freeze the steak 20 min until firm |
| Slice the steak as thin as possible across the grain |
| 2 Tbsp vegetable oil | cook over medium 10 min until soft and browned | move onions to a plate; sear steak on high in 2 batches, 2 to 3 min each, chopping with a spatula, then return onions and mix | split into 4 piles, top, melt 1 min | scoop each pile into a roll |
| 1 large onion, thinly sliced |
| 1 Tbsp vegetable oil |
| 1 1/2 lb boneless ribeye steak, shaved thin |
| 3/4 tsp salt |
| 1/2 tsp ground black pepper |
| 8 slices provolone cheese (or warmed Cheez Whiz) |
| 4 hoagie rolls, split but hinged |