- Cooking Time:
- Servings: 12
- Preparation Time:
- 3/4 cup dried brown lentils, rinsed and picked over
- 2 1/2 teaspoons table salt
- 3/4 cup bulgur wheat
- 2 tablespoons vegetable oil
- 2 medium onions, chopped fine (2 cups)
- 1 large celery rib, chopped fine (about 1/2 cup)
- 1 small leek, white and light green parts only, chopped fine (about 1/2 cup)
- 2 medium garlic cloves, minced or pressed through garlic press (2 teaspoons)
- 1 pound cremini or white mushrooms, cleaned and sliced about 1/4 inch thick (about 6 1/2 cups)
- 1 cup raw unsalted cashews
- 1/3 cup mayonnaise
- 2 cups panko (Japanese bread crumbs)
- Ground black pepper
- 12 burger buns for serving
- Bring 3 cups water, lentils, and 1 teaspoon salt to boil in medium saucepan over high heat; reduce heat to medium-low and simmer, uncovered, stirring occasionally, until lentils are just beginning to fall apart, about 25 minutes. Drain in fine-mesh strainer. Line baking sheet with triple layer paper towels and spread drained lentils over. Gently pat lentils dry with additional paper towels; cool lentils to room temperature.
- While lentils simmer, bring 2 cups water and 1/2 teaspoon salt to boil in small saucepan. Stir bulgur wheat into boiling water and cover immediately; let stand off heat until water is absorbed, 15 to 20 minutes. Drain in fine-mesh strainer; use rubber spatula to press out excess moisture. Transter bulgur to medium bowl and set aside.
- Heat 1 tablespoon oil in 12-inch nonstick skillet over medium-high heat until shimmering. Add onions, celery, leek, and garlic; cook, stirring occasionally, until vegetables begin to brown, about 10 minutes. Spread vegetable mixture on second baking sheet to cool; set aside. Add remaining 1 tablespoon oil to now-empty skillet; heat over high heat until shimmering. Add mushrooms and cook, stirring occasionally, until golden brown, about 12 minutes. Spread mushrooms on baking sheet with vegetable mixture; cool to room temperature, about 20 minutes.
- Process cashews in food processor until finely chopped, about fifteen 1-second pulses (do not wash food processor blade or bowl); stir into bowl with bulgur along with cooled lentils, vegetable-mushroom mixture, and mayonnaise. Transfer half of mixture to now-empty food processor and pulse until coarsely chopped, fifteen to twenty 1-second pulses; mixture should be cohesive but roughly textured. Transfer processed mixture to large bowl; repeat with remaining unprocessed mixture and combine with first batch. Stir in panko, 1 teaspoon salt, and pepper to taste.
- Line baking sheet with paper towels. Divide mixture into 12 portions, about 1/2 cup each, shaping each into tightly packed patty, 4 inches in diameter and 1/2 inch thick; set patties on baking sheet; paper towels will absorb excess moisture. (Patties can be covered with plastic wrap and refrigerated up to 3 days.)
- TO COOK ON THE GRILL: Build medium-hot charcoal fire or preheat gas grill on high. Using tongs, wipe grate with wad of paper towels dipped lightly in vegetable oil. Grill burgers, without moving them, until well browned, about 5 minutes; flip burgers and continue cooking until well browned on second side, about 5 minutes.
- TO COOK ON THE STOVETOP: Heat 2 tablespoons vegetable oil in 12-inch nonstick skillet over medium-high heat until shimmering; cook burgers, 4 at a time, until well browned, about 4 minutes per side, lowering heat to medium if browning too quickly. Repeat with additional oil and burgers. Serve.
NotesThese are so tasty. I used regular cashews and breadcrumbs in mine, and wasn't as fussy about draining the lentils on paper towels and they still came out fine.
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