Flank Steak Hoagies

Name: Flank Steak Hoagies
Ingredients: 3 hoagie rolls; 3 tablespoons olive oil; 1 clove garlic, smashed and peeled; One 1 1/2-pound flank steak, at room temperature 45 minutes; 1 1/2 teaspoons kosher salt; 1 red onion, sliced 1/3-inch-thick; 1 teaspoon plus 2 tablespoonsolive oil; 1 cup pitted kalamata olives, chopped; 1/2 cup chopped fresh basil; 1/2 cup marinated sun-dried tomatoes, drained and chopped; 2 tablespoons capers, drained and chopped; 1 tablespoon freshly squeezed lemon juice; 1/2 teaspoon anchovy paste; 1/4 teaspoon dried oregano; 2 jarred roasted red bell peppers, sliced; 6 thin slices provolone; 3 cups loosely packed baby arugula