Crustless Potato and Gruyère Tart

Ingredients

• • 3 tablespoons (45 ml) butter, melted
  • 3 large Yukon Gold potatoes, thinly sliced on a mandolin
  • 1/2 cup (125 ml) grated Parmigiano-Reggiano
  • 1 1/2 cups (375 ml) grated Gruyère
  • 6 cups (1.5 litres) mixed baby greens

• DRESSING

  • 3 tablespoons (45 ml) olive oil
  • 1 tablespoon (15 ml) whole-grain mustard
  • 1 tablespoon (15 ml) white wine vinegar
  • 1 tablespoon (15 ml) Worcestershire sauce
  • 2 teaspoons (10 ml) brown sugar
  • Salt and pepper