Philly Cheesesteak Kebabs

Name: Philly Cheesesteak Kebabs
Ingredients: 2 1/2 pounds sirloin steak, trimmed and cut into 1-inch cubes; 1/4 cup extra-virgin olive oil; 2 cloves garlic, minced; 1 teaspoon dried Italian seasoning; Kosher salt and freshly ground pepper; 1 sweet onion, cut into 1-inch pieces; 1 large green bell pepper, seeded and cut into 1-inch pieces; 8 ounces button mushrooms, trimmed and halved (or quartered if large); Vegetable oil, for the grill; 3/4 cup yellow cheese sauce (such as Cheez Whiz); Hoagie rolls, sliced hot cherry peppers and hot sauce, for topping