Take your beef burgers to the next level with this gourmet blue cheese burger recipe. The combination of juicy beef patties, tangy blue cheese, and caramelized onions creates a flavor explosion in every bite. Start by seasoning the ground beef with salt, pepper, and your favorite spices. Shape the mixture into patties and grill them to perfection. While the burgers are cooking, sauté some thinly sliced onions in a pan with a little butter until they become golden brown and caramelized. Once the burgers are done, top them with crumbled blue cheese and let it melt slightly. Place the burgers on toasted buns and add a generous amount of caramelized onions on top. The creamy blue cheese pairs perfectly with the sweet and savory onions, creating a gourmet burger experience that will impress your guests. Serve with a side of crispy fries or a fresh salad for a complete meal.