Ingredients:

- 1 lb ground beef
- 4 hamburger buns
- 4 slices of cheese (optional)
- 1 tomato, sliced
- Lettuce leaves
- 1 onion, sliced
- Pickles (optional)
- Salt and pepper to taste
- Ketchup
- Mustard
- Mayonnaise

Recipe:

1. Preheat your grill or skillet to medium-high heat.
   
2. Divide the ground beef into 4 equal portions and shape them into patties.
   
3. Season the patties with salt and pepper on both sides.
   
4. Place the patties on the grill or skillet and cook for about 4-5 minutes on each side, or until they reach your desired level of doneness.
   
5. If you're adding cheese, place a slice on each patty during the last minute of cooking to melt.
   
6. While the patties are cooking, lightly toast the hamburger buns on the grill or in a toaster.
   
7. Assemble the burgers by placing a patty on the bottom half of each bun.
   
8. Add lettuce, tomato slices, onion slices, and pickles on top of the patty.
   
9. Spread ketchup, mustard, and mayonnaise on the top half of the bun, as desired.
   
10. Place the top half of the bun on the assembled burger.
    
11. Serve immediately and enjoy!