- Olive oil, or other neutral oil, for cooking
- 1 sweet onion, sliced
- 2 green bell peppers, sliced
- 1 cup chopped sweet Italian peppers (from a jar; I use Mezzetta)
- Salt and pepper, to taste
- 2 tsp garlic powder, divided
- 2 sirloin steaks, very thinly sliced
- 1.5 cup shredded provolone or Italian cheese blend
- 1 cup mayonnaise
- 2 to 4 tsp adobo sauce, from a can of chipotle peppers (see NOTE)
 To serve: Split hoagie rollsÂ