Mexican-Style Grilled Veggie Sandwich - Martin's Famous Potato Rolls and Bread

Ingredients

• 1 Large Red Bell Pepper, roasted*
• 2 Tablespoons Fresh Lime Juice
• 1 Tablespoon Minced Fresh Oregano
• 1 Tablespoon Olive Oil
• 1/2 Teaspoon Ground Cumin
• 1/2 Teaspoon Freshly Ground Black Pepper, divided
• 1/4 Teaspoon Ground Cayenne
• 1 (15-Ounce) Can Black Beans, rinsed and drained
• Cooking Spray
• 1 Large Zucchini, cut lengthwise into (1/4-inch-thick) slices
• 1 Small Red Onion, cut into (1/4-inch-thick) slices
• 8 Slices Martin’s Old-Fashioned Real Butter Bread
• 1/4 Teaspoon Kosher Salt
• 2 Ounces Pepper-Jack Cheese, shredded (about 1/2 cup)