Bistro Flank Steak Sandwich - Martin's Famous Potato Rolls and Bread

Ingredients

• 6 Cloves Garlic, unpeeled
• 1 Tablespoon Extra-Virgin Olive Oil
• 3/4 Pound Flank Steak, trimmed
• 1/2 Teaspoon Salt, divided
• 1/4 Teaspoon Pepper
• 1 Medium Red Bell Pepper
• 1 Medium Yellow Bell Pepper
• 8 Slices Martin’s Potato Bread
• 2 Tablespoons Reduced-Fat Mayonnaise
• 1 Cup Mixed Salad Greens