"I try to cook vegetarian as much as possible. My then-16-month-old daughter loved black beans, so I decided to make black bean burgers. My now-2-year-old loves them! I like a sweet bite with savory dishes, so I added mango to an avocado salsa to top the burgers." –Marina Delio, Santa Barbara, Calif.
Place black beans in a medium bowl; mash with a fork. Stir in 1/2 cup finely chopped cilantro and the next 7 ingredients (through egg whites). Shape bean mixture into 6 (1/2-inch-thick) patties. Arrange patties on a baking sheet coated with cooking spray. Bake at 350° for 20 minutes, carefully turning once.
Combine remaining 1/4 cup cilantro, mango, and the next 4 ingredients (through minced garlic) in a medium bowl. Place a patty on bottom half of each hamburger bun; top each with 1 lettuce leaf, 1/3 cup salsa, and top half of bun.