1.5lbsflank steak, sliced thin & against the grain
1smallyellow onion, sliced into thin strips
6cremini mushrooms, sliced
8sweet mini peppers, deseeded & sliced
3/4cupshredded cheddar
3/4cupshredded Monterey Jack
3/4 cupmozzarella
1.5tbspsteak seasoning, divided
1/4cupcream cheese, room temperature for easy spreading
5Bolillo rolls can use hoagie or french rolls
4tbspolive oil, divided
Instructions
In a large skillet, heat two tablespoons of olive oil over medium heat. Add the flank steak & one tablespoon of seasoning & cook (stirring occasionally) until no longer pink. Remove from heat.
In a cast iron skillet on a different burner, heat the remaining olive oil over medium heat. Add the onions & mushrooms. Cook until caramelized & nicely browned all over, about 5-7 minutes.
Add the mini peppers to the onion mixture & stir & cook for another 2-3 minutes.
While the veggies are finishing up, slice the steak into little bite sized pieces. Add the steak bites & any remaining oil/seasoning from the skillet they cooked in to the cast iron skillet with the veggies. Stir everything together & let rest while you prepare the bread.
Slice the rolls in half length-wise. Use your fingers to tear out the centers of the bread slices to make a canal in each half. (Reserve the removed bread for a different use.) Lay them in a single layer on a baking sheet that's been lined with foil for easy clean up.
Spread each slice of bread with a little bit of cream cheese. Sprinkle the top of each bread half with the remaining steak seasoning.
Fill each bread half with the steak / veggie combo.
Mix the shredded cheeses together & use it to top each sandwich with about 3 tablespoons or so (or more, to your desired liking).
Broil about 4 inches from heat for 3-4 minutes, or until cheese is melted & tops are just beginning to brown. Voila!
Notes
It only takes a split second to burn food under the broiler so be sure to watch your food constantly.