Preheat your oven to 400°F (200°C).

In your oven-safe skillet, add the 1 lb of ground beef over medium heat. Cook for about 6–8 minutes, breaking it apart with a spatula, until nicely browned.

Once the beef is browned, add the diced yellow onion and minced garlic to the skillet. Continue cooking for 2–3 minutes until the onion is translucent and softened.

Stir in the ketchup, yellow mustard, Worcestershire sauce, salt, and black pepper. Combine well and let cook for another minute.

Sprinkle the shredded sharp cheddar cheese evenly over the seasoned beef mixture.

In a mixing bowl, whisk together the flour, baking powder, baking soda, and salt.

Add the buttermilk and melted unsalted butter to your dry ingredients. Gently stir until just combined.

Pour the biscuit mixture over the beef and cheese in the skillet. Spread the batter to cover the beef evenly.

Sprinkle extra shredded cheddar cheese or sesame seeds over the biscuit topping if desired.

Place the skillet in your preheated oven and bake for 20–25 minutes until golden brown.

Once baked, let the skillet rest for about 5 minutes before slicing.

Serve garnished with diced pickles or chopped fresh herbs.