Heat a skillet over medium-high heat and brown the ground beef (5–7 minutes). Drain excess fat.
Add chopped onion and sauté for 3–4 minutes until soft and translucent.
Stir in French onion soup and Worcestershire sauce. Season with salt and pepper.
Reduce heat and simmer for 10 minutes to allow flavors to blend.
Spoon mixture onto burger buns. Add cheese or toppings if desired.
Serve hot with your favorite sides.
