Ingredients

The following ingredients have 4 Servings
  • 1 Tablespoon olive oil
  • 2 large onions (halved and thinly sliced)
  • 1/2 teaspoon kosher salt
  • 1/4 teaspoon pepper
  • 1/2 Tablespoon fresh thyme ( or 1/2 teaspoon dried thyme)
  • 1/4 cup beef broth
  • 1/4 cup red wine (or additional beef broth)
  • 1/4 cup mayonnaise
  • 1/4 cup plain Greek yogurt
  • 2 Tablespoons of the onion mixture
  • 1 teaspoon dijon mustard
  • 1 teaspoon minced fresh parsley ( or 1/4 teaspoon dried parsley)
  • pinch salt and pepper (to taste)
  • 1 1/3 pounds lean ground beef
  • 1 Tablespoons minced fresh parsley ( or 1 teaspoon dried parsley)
  • 1/2 teaspoon pepper
  • 1 teaspoon kosher salt
  • 4 oz gruyere cheese (shredded, divided)
  • 4 brioche buns (or gluten free buns, if needed, sliced open)
  • Bibb or butter lettuce

Instruction