Ingredients

The following ingredients have 4 Servings
  • 3 cups shredded Gruyere cheese
  • 1 store-bought flatbread
  • 1/4 cup chopped parsley
  • 2 Tablespoons extra-virgin olive oil
  • 3 sweet onions, sliced thickly (about 5-6 slices per onion)
  • 1 teaspoon kosher salt
  • freshly ground black pepper
  • 2 Tablespoons sugar
  • 1/4-1/2 cup balsamic vinegar, based on personal preference

Instruction

  • Heat oil in a large skillet over medium-low heat. Add half of onions, cook down slightly then add the other half. (You can add them all at once but it might be difficult to stir until they cook down some, depending on the size of your skillet). Season with salt & pepper.
  • Once onions are cooked down slightly (enough that you can stir them all in the skillet without any going overboard) add sugar and stir gently. Add balsamic and stir again. Reduce heat to low and slowly cook onions, stirring occasionally, for an hour or so. Vinegar will reduce and coat onions.
  • Meanwhile, preheat oven to 400F (or according to package directions on flatbread).
  • Top flatbread with half of cheese, desired amount of onions (see note) then the remaining cheese. Bake for 10 minutes or until cheese is melted and golden brown. Remove from oven, sprinkle with parsley, cut into slices and serve immediately.