Mushroom Kasha Burgers with Chipotle Mayonnaise Recipe | Epicurious

Ingredients

• 2/3 cup water
• 1/3 cup coarse kasha (whole roasted buckwheat groats)
• 1 pound portabella mushrooms, stems discarded
• 1 cup finely chopped onion
• 1 cup finely chopped red bell pepper
• 3 tablespoons unsalted butter
• 2 garlic cloves, finely chopped
• 3 tablespoons finely chopped flat-leaf parsley
• 1 teaspoon soy sauce
• 1 1/2 cups fine dry bread crumbs, divided
• 1 large egg, lightly beaten
• 1/4 cup olive oil
• 1/2 cup mayonnaise
• 1 tablespoon Tabasco chipotle sauce, or to taste
• 8 large oval slices rye bread, cut into 4 1/2-inch rounds if desired, lightly toasted