Beef & Bulgur Burgers with Blue Cheese

Prepare bulgur according to package directions. Drain in a fine-mesh sieve, pressing to extract as much liquid as possible. Transfer the bulgur to a large bowl. Let cool for 5 minutes.

Meanwhile, combine onion, vinegar, water and sugar in a medium saucepan. Bring to a boil and cook for 2 minutes. Remove from heat and set aside, stirring occasionally.

Add beef, blue cheese, celery salt (or salt) and pepper to the bulgur; use your hands to gently combine. Form the mixture into 4 burgers, about 4 inches in diameter.

Heat oil in a large nonstick skillet over medium heat. Cook the burgers until browned and an instant-read thermometer inserted into the thickest part registers 165 degrees F, 4 to 6 minutes per side. Drain the pickled onion. Serve each burger on a lettuce leaf, topped with onion.