How to Make this Perfect Steak Sandwich With Cheese Sauce and Caramelized Onions

The guys at Food Steez are experts at dope sandwiches. Here, they take the traditional steak sandwich to a new level with homemade cheese sauce and caramelized onions. Steak Sandwich with Cheese Sauce and Caramelized Onions • 1 yellow onion, thinly slic