Classic American Burger with Grilled Onions

Method

1. Preheat grill or skillet to medium-high heat.
2. Form ground beef into 4 equal patties, seasoning with salt and pepper.
3. Cook patties for 3-4 minutes per side for medium doneness.
4. Caramelize onions by slicing and cooking in a pan with butter until golden.
5. Toast the bun and assemble with toppings.
6. Serve immediately.
7. Check that the ground meat reaches 71°C (160°F) throughout before serving.