Ingredients
10 ounces baby spinach
6 tablespoons extra-virgin olive oil
3 1/2 ounces shiitake mushrooms, stems removed, caps finely chopped (1 cup)
1 yellow onion, finely chopped (1 cup)
Kosher salt and freshly ground pepper
2 teaspoons minced garlic (from 2 cloves)
1 can (15.5 ounces) pinto beans, rinsed and drained
1 cup packed cilantro leaves, chopped
2 teaspoons fresh lime juice
1 egg, beaten
1 1/2 cups Cooked Bulgur
1/3 cup dry whole-wheat breadcrumbs
6 slices Swiss cheese (optional)
6 potato sandwich rolls, split and toasted
Dijonnaise, sliced avocado, sprouts, and pickles, for serving
Preparation
In a large nonstick skillet, bring 1/2 cup water to a boil over high heat. Stir in spinach; cover and cook until bright green and wilted, about 1 minute. Drain and squeeze dry. Chop.
Return skillet to medium-high heat. Add 3 tablespoons oil, then mushrooms, onion, and a pinch of salt. Cook, stirring occasionally, until browned, 6 to 7 minutes. Add garlic; cook 1 minute more. Stir in beans, then transfer to a large heatproof bowl; let cool slightly. Add cilantro, spinach, 1 teaspoon salt, 1/2 teaspoon pepper, and lime juice; mash mixture together with a fork or potato masher, leaving some larger pieces. Stir in egg, 1 cup bulgur, and breadcrumbs. Refrigerate 30 minutes.
Spread remaining 1/2 cup bulgur on a plate; season with salt and pepper. Form bean mixture into 1/2-cup patties (about 1/2 inch thick); press each side into bulgur to coat. Wipe skillet clean; return to medium heat. Swirl in 1 1/2 tablespoons oil and add half of patties. Cook until a deep crust forms, 8 to 10 minutes. Flip and cook until second sides are crisp and patties are heated through, about 8 minutes more. In last minute of cooking, add cheese and cover; cook until melted. Transfer to a rimmed baking sheet fitted with a wire rack. Repeat with remaining burgers. Spread each roll with Dijonnaise, then top with a patty, avocado, sprouts, and pickles; serve.
