Oklahoma Onion Burger. I've done something similar, I will try this way the next time I have fresh ground beef. cooking.nytimes.com/recipes/1023331-oklahoma-onion-burgers cooking.nytimes.com/recipes/1023331-oklahoma-onion-burgers www.thekitchn.com/kenji-lopez-oklahoma-onion-burger-review-23421754?amp=1 thekitchn.com/kenji-lopez-oklahoma-onion-burger-review-23421754?amp=1