Celebrate National Hamburger Day with this perfectly pan seared beef patty piled high with caramelized onions, melty cheese, and zesty stone ground mustard.
Grab a few napkins to tuck into your collar for this one because you’ll need it! Say goodbye to the normal old hamburger toppings like lettuce and tomatoes…and hello to French Onion Soup between two buns.
Wow, your guests at a cookout by making these on a grill or kick up your weeknight burger game a notch with these babies!