You are here: Home » Recipes » Bleu Cheese Burgers Bleu Cheese Burgers Recipe by cdcgdm0610 Yield 6 servings PrintEmail Ingredients 1 tablespoon Extra Virgin Olive Oil1 large onion, thinly sliced1 tablespoon light brown sugar1½ cup bleu cheese crumbles4 tablespoons butter, softened2 tablespoons chopped parsley1 teaspoon crushed rosemary¼ cup finely chopped toasted walnuts2½ pounds ground chuck1 teaspoon salt1 teaspoon pepper6 -- burger buns, split & toasted2 cups baby spinach leaves Instructions Heat oil in a large nonstick skillet over medium heat until hot. Add onions, cook 5-7 minutes or until tender, stirring occasionally. Reduce heat to medium low, sprinkle in brown sugar, and continue cooking 10 minutes or until very tender and golden brown, stirring often. Remove from heat and cover with lid to keep warm. Meanwhile prepare cheese mixture. In a medium mixing bowl, combine first four ingredients and stir until well blended. Add chopped walnuts, stir until incorporated, then cover and set aside. Wipe grill with vegetable oil and heat to medium high heat. Shape beef into 6 round firm patties and season each burger, on both sides, with 1/4 teaspoon salt and 1/4 teaspoon pepper. Grill burgers 10-15 minutes or to desired doneness, turning once. When burgers are almost done, set buns flat side down, on grill until golden brown. Remove burgers from grill, cover with foil, and let rest 5 minutes. Assemble burger as follows: caramelized onions, burger patties, cheese mixture and salad greens. Close sandwich with bun top and serve.