Philly Cheese steak Tacos

Adapted from: http://www.food.com/…/grilled-philly-cheesesteak-tacos-4834…

Serves: 4

1 lb flank steak, trimmed
3⁄4 lb. white mushroom
1 green bell pepper, quartered
1 red bell pepper, quartered
1 onion, thickly sliced crosswise
3 Tbsp. extra virgin olive oil
salt and pepper
Garlic powder
8 soft shell taco shells
1/2 lb. monterey jack cheese
1/2 lb. provolone cheese
1/2 c. sliced Jalapeno pepper

Directions:

1. Preaheat a dutch oven griddle pan to medium-high. On a large baking sheet, arranging the steak, mushrooms, bell pepper and onion; brushing the pan with olive oil and season with salt and pepper.

2. Grill the steak and vegetables together, turning once, until the steak is well-crusted and the vegetables are charred and softened, for about 12 minutes; transferring to a large plate and let stand until the vegetables are cool enough to handle.

3. Slicing the steak thinly and vegetables separately and transfer the vegetables to a large bowl; season with salt and pepper. Divide the steak among the taco shells, top with the grilled vegetables and sliced cheese.