Preheat your grill or stovetop skillet over medium-high heat.
In a bowl, season the ground beef with salt and pepper, then mix gently.
Divide the beef into 4 equal patties, making them slightly larger than the buns.
Use your thumb to create a slight indentation in the center of each patty to prevent puffing.
Place the patties on the grill and cook for about 4-5 minutes on one side.
Flip the patties and immediately place a slice of cheddar cheese on top.
Cook for another 4-5 minutes, or until the cheese is melted and the burger reaches your desired doneness.
Toast the burger buns on the grill for about 1-2 minutes until golden.
Assemble the burger by placing lettuce, tomato, and onion on the bottom bun.
Add the cooked patty with melted cheese, and top with ketchup, mustard, and pickles before placing the top bun.