Ingredients
– 1 lb ground beef (preferably 80/20 for juiciness)
– 2 large onions, thinly sliced
– 2 tablespoons butter
– 1 tablespoon olive oil
– 1 teaspoon sugar
– 1/2 cup beef broth
– 1 tablespoon Worcestershire sauce
– 4 slices Gruyère cheese (or Swiss cheese)
– 4 burger buns
– Fresh thyme leaves, for garnish
– Salt and pepper to taste
Equipment Needed
– Large skillet
– Mixing bowl
– Spatula
– Baking sheet (for toasting buns)
– Knife and cutting board
– Measuring cups and spoons
Step-by-Step Instructions
To start, I recommend heating the skillet over medium heat, adding the butter and olive oil, then tossing in those beautifully sliced onions. Sauté them until they start to caramelize—this is where the magic really begins! I usually stir occasionally to ensure they don’t burn, and after about 15 minutes, I add the sugar to enhance the sweetness. The smell is absolutely incredible! (See the next page below to continue steps…)