Indulge in a delicious twist on classic burgers with these Savory French Onion Burgers! This easy recipe features juicy beef patties topped with sweet, caramelized onions and melted Swiss cheese, all on a perfectly toasted brioche bun. Perfect for your next BBQ or casual dinner, these burgers are sure to impress!
1 lb ground beef (80/20)
1 large yellow onion, thinly sliced
2 tablespoons unsalted butter
1 tablespoon olive oil
1 teaspoon sugar
1 teaspoon garlic powder
Salt and pepper to taste
4 slices of Swiss cheese
4 burger buns (preferably brioche)
Fresh thyme leaves, for garnish