The patties come together in minutes thanks to the food processor. Cremini mushrooms, often called baby bellas, are what give the burgers their meaty texture and earthy flavor—opt for these over milder button mushrooms
1 tablespoon ground flaxseed 1 tablespoon Worcestershire sauce 1/2 teaspoon kosher salt, divided 1/2 teaspoon ground cumin 1/2 teaspoon black pepper 2 ounces cremini mushrooms 1 (15-oz.) can unsalted black beans, rinsed, drained, and divided 1 large egg, lightly beaten 1 garlic clove, smashed 1/3 cup whole-wheat panko (Japanese breadcrumbs) 1 tablespoon canola oil 1 1/2 teaspoons fresh lime juice 1 ripe avocado, peeled and pitted 2 tablespoons plain 2% reduced-fat Greek yogurt 1 tablespoon water 4 whole-wheat hamburger buns, toasted 1/2 cup finely shredded red cabbage
How to Make It
Place flaxseed, Worcestershire sauce, 1/4 teaspoon kosher salt, cumin, pepper, mushrooms, half of the beans, egg, and garlic in a food processor; process 1 minute or until almost smooth. Place bean mixture in a bowl; stir in remaining half of beans and panko.
Heat oil in a large cast-iron or nonstick skillet over medium-high. Fill a 1/2-cup measure with bean mixture; add to pan. Repeat procedure 3 times to form 4 patties. Flatten patties slightly with the back of a spatula. Cook 2 to 3 minutes on each side or until browned.
Combine remaining 1/4 teaspoon salt, juice, and avocado in a bowl, mashing with a fork. Stir in yogurt and 1 tablespoon water. Divide patties among bottom halves of buns; top evenly with avocado mixture, cabbage, and top halves of buns.