• 1 tablespoon olive oil
• 1-2 large onions, thinly sliced
• sea salt
• pepper
• 1 teaspoon good quality balsamic vinegar or a glazing sauce
  crumbled Gorgonzola or Stilton, optional

Heat oil in pan until haze forms. Add onion slices, salt, and pepper. Reduce heat, cook slowly, stirring occasionally, until onions turn limp and then brown. This may take 20-30 minutes. Add vinegar. Serve over meat or vegetable burgers. Sprinkle with some of the cheese, if using.


Beef Dishes Sandwiches Vegetable Dishes