Make sourdough bread! Slice the bread.

Fry a steak and thinly slice it. You can also buy thinly sliced beef and fry that in oil with salt and pepper.

In a skillet, sauté onion until it turns caramelized. Slightly salt the onions.

In a separate bowl make the dressing by combining mayo, garlic, dill. Mix well.

On each sourdough bread slice, spread about a tsp of the dressing on both sides (only the insides).

Add cheese, steaks, onion.

Close the sandwich and bake or skillet fry on each side until golden.

Serve hot.