In a large skillet, melt a tablespoon of oil over medium heat. Add thinly sliced onions and sauté for about 10-15 minutes, stirring occasionally until they caramelize and turn golden brown.

Once the onions are perfectly caramelized, push them to the side and add one pound of lean ground beef to the skillet. Cook over medium-high heat for 5-7 minutes, breaking it up until browned.

Stir in a splash of gluten-free soy sauce along with your favorite seasonings. Mix well to combine, allowing the mixture to heat through for about 2 minutes.

Sprinkle your choice of cheese over the beef mixture. Cover the skillet and cook for about 1-2 minutes until the cheese is melted and bubbly.

Toast your buns in the same skillet until golden. Spoon the beef and cheese mixture onto the toasted buns and layer with any additional toppings.