Ingredients
– 1 pound ground beef (80/20 for juiciness)
– 2 large onions, thinly sliced
– 2 tablespoons unsalted butter
– 1 tablespoon olive oil
– 1 teaspoon fresh thyme (or ½ teaspoon dried thyme)
– Salt and pepper, to taste
– 4 slices of Swiss cheese (or Gruyère for a more authentic touch)
– 4 hamburger buns
– Optional: fresh parsley for garnish
Equipment Needed
– Large skillet
– Wooden spoon or spatula
– Grill or grill pan (optional)
– Cutting board
– Chef’s knife
– Serving platter
Step-by-Step Instructions
To start, I begin by caramelizing the onions, which is the star of the show in this burger. In a large skillet over medium heat, I melt the butter and olive oil together—just enough to get the rich aromas going. Then, I add the sliced onions, stirring them occasionally while they cook down and turn that beautiful golden-brown color, which takes about 20-25 minutes. The patience really pays off with that sweet, deep flavor! (See the next page below to continue steps…)