• 1 tablespoon vegetable oil
• 1 celery stalk, coarsely chopped
• 1 (15-ounce) can white beans, rinsed, drained
• 4 ounces button mushrooms
• 1 cup panko (Japanese breadcrumbs)
• 1 teaspoon kosher salt, divided
• 5 tablespoons unsalted butter
• 1/2 cup hot pepper sauce, preferably Frank's
• 2 tablespoons pure maple syrup
• 1/4 cup crumbled blue cheese
• 1/2 teaspoon freshly ground black pepper
• 2 tablespoons chopped chives, divided