INGREDIENTS
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For 6-7 burgers
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2 tablespoons olive oil, plus more for cooking
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1 yellow onion, chopped
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8 oz cremini or shitake mushrooms, roughly choped
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1 (15 ounce) can black beans, drained, rinsed, and dried on paper towels
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1 cup cooked brown rice
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1 tablespoon finely chopped canned beets
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1 teaspoon chili powder
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1/4 teaspoon ground cumin
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1/4 teaspoon black pepper
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1 tablespoon barbecue sauce
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1 teaspoon kosher salt
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1 egg white (optional, to bind)
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4 slices white cheddar cheese (optional)
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Buns
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butter lettuce
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Sliced tomato
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Chipotle Aioli