Burgers just got better with the addition of tender sweet onions, melted cheese, and tangy lemon-Dijon mayonnaise.


  • 2 Tbs. extra-virgin olive oil; more as needed
  • 1 large sweet onion, thinly sliced
  • Kosher salt and freshly ground black pepper
  • ⅓ cup mayonnaise
  • 1 Tbs. Dijon mustard
  • 1-1/2 tsp. fresh lemon juice
  • 1 tsp. finely chopped fresh rosemary
  • garlic powder
  • 1 Pound ground beef
  • 4 slices Gruyère cheese
  • 4 good-quality hamburger buns or rolls, split
  • fresh arugula leaves


  1. In a skillet over medium heat – add about 1 Tablespoon of oil – add onions – cook for about 12 minutes – you really want them brown and soft. Lightly salt and pepper
  2. In another skillet – cook the burgers – add rosemary to the meat season with a little garlic powder – it will take about 10 – 15 minutes to cook the burgers so plan accordingly
  3. Toast the buns
  4. In a bowl – combine the following well – mayo, Dijon, and lemon juice
  5. Once the burgers are cooked top with cheese
  6. Place the mayo mixture on the bottom of each bun then arugula, burger then top with the top bun
  7. Enjoy!