Ingredients

  • 1 12 lbs ground beef
  • 14 teaspoon salt
  • 13 cup crumbled blue cheese
  • 3 ounces cream cheese, softened
  • 1 tablespoon Dijon mustard
  • 4 onion hamburger buns
  • 1 12 cups fresh mushrooms, sliced 1/4-inch thick
  • 2 medium onions, thinly sliced
  • 14 teaspoon salt
  • 14 teaspoon pepper
  • 1 tablespoon Worcestershire sauce
  • 4 slices ripe tomatoes

Method

  • In medium bowl stir together ground beef, 1/4 teaspoon salt and 1/4 teaspoon pepper; form into 8 large 1/4-inch thick patties.
  • In small bowl stir together blue cheese, cream cheese and mustard.
  • Place about 2 tablespoons cheese mixture on top of each of 4 patties.
  • Top each with remaining meat patty; press around edges to seal.
  • Place hamburgers in large skillet.
  • Cook over medium heat, turning once, until desired doneness (about 12 minutes for medium).
  • Place hamburgers on buns.
  • In same skillet with drippings place mushrooms and onions, add 1/4 teaspoon salt, 1/4 teaspoon pepper and Worcestershire sauce.
  • Cook over medium high heat, stirring occasionally, until tender (4 to 5 minutes).
  • Meanwhile, place tomato slice on each hamburger, top with grilled mushrooms and onions.