Market Sandwich Recipe | Epicurious

Ingredients

• 1/2 cup white vinegar
• 1 cup thinly sliced red onion
• 1 cup canned black beans, rinsed and drained
• 1/2 teaspoon ground cumin
• 1/4 cup fat-free mayonnaise
• 1 teaspoon finely chopped canned chipotle chile with sauce
• 1 tablespoon fresh lime juice
• 8 slices whole-grain bread
• 2⁄3 cup crumbled reduced-fat feta
• 1 medium avocado, thinly sliced
• 2 tablespoons fresh cilantro, chopped
• 1 tomato, cut into 8 slices