I cooked Oklahoma onion burgers yesterday.

Really simple.

1. Season your mince with salt and form into small rounds.
2. Smash the burgers topped with really finely sliced onion smashed straight into the burger on a hot griddle (I used a soapstone in my Kamado).
3. When the lacey edges of the burger are starting to caremalise, flip and add a slice of cheese.
4. Place the top of the bun on top of the cheese and the bottom face down on top of that. This lets the buns steam a little and soften.

Serve.

Five ingredients: beef mince, onion, salt, cheese, bun.

Great burger.