Philly-Style Steak Sandwiches with Grilled Onions and Provolone 

Ingredients

• 1 large yellow onion, thinly sliced
• 1 red bell pepper, thinly sliced
• 1 yellow bell pepper, thinly sliced
• 2 garlic cloves, thinly sliced
• 2 tablespoons extra-virgin olive oil
• 1 teaspoon dried oregano
• Kosher salt
• Freshly ground black pepper
• 2 boneless rib eye steaks, each 8 to 10 ounces and about 1 inch thick, trimmed of excess fat
• Extra-virgin olive oil
• 4 ciabatta rolls, split
• 1 garlic clove, peeled
• 8 thin slices provolone cheese, about 1 ounce each