Rustic Onion Tart Recipe

Serves: 4 Save

Ingredients (13)

  • 1 recipe for butter sour cream pastry dough* or 1 packaged, flat pie crust (Trader Joe's has one in their frozen section)
  • 3 medium sized red and/or yellow onions (enough for 5 to 8 cups, sliced)
  • 2 tablespoons extra virgin olive oil
  • 1 tablespoon butter
  • Salt
  • 1 teaspoon balsamic vinegar
  • 1/2 teaspoon fresh thyme, chopped, or 1/4 teaspoon dried thyme
  • 3/4 cup (not packed) roughly grated Gruyère Swiss cheese
  • *Sour cream pastry dough:
  • 1 1/4 cup (160 g) all purpose flour
  • 1 teaspoon salt
  • 5 ounces of butter (1 1/4 sticks, 10 Tbsp, 137g), cubed
  • 1/4 cup sour cream

Directions

Learn how to make this recipe at Simply Recipes