Wild Mushroom & Caramelized Onion Tart

Wild Mushroom & Caramelized Onion Tart

This savory tart captures the essence of the forest floor, earthy, rich, and aromatic. Wild mushrooms and sweet, slow-caramelized onions are tucked into a buttery, rustic crust, with hints of thyme and Gruyère. The result is a deeply satisfying dish, perfect for a twilight feast where the shadows stretch long.

Ingredients (for a 9-inch tart):

Pastry:

  • 1 ½ cups all-purpose flour
  • ½ tsp salt
  • 8 tbsp cold butter, cubed
  • 3-4 tbsp cold water

Filling:

  • 2 large yellow onions, thinly sliced
  • 2 tbsp butter + 1 tbsp olive oil
  • 3 cups assorted wild mushrooms (chanterelle, cremini, shiitake), chopped
  • 2 garlic cloves, minced
  • 2 tsp fresh thyme leaves
  • 2 large eggs
  • ¾ cup heavy cream
  • ½ cup grated Gruyère or Parmesan
  • Salt & pepper to taste

Instructions:

  1. Pastry: Pulse flour and salt with cold butter until crumbly. Add cold water, form a dough. Chill 30 minutes.
  2. Roll out pastry, line tart pan, chill again for 20 min.
  3. Blind bake crust at 375°F (190°C) for 15 min. Remove weights and bake 5 min more.
  4. Caramelize onions: Cook onions in butter/olive oil over low heat for 30-40 min until deeply golden.
  5. Cook mushrooms: Sauté mushrooms and garlic until browned. Mix with thyme, season well.
  6. Combine: Whisk eggs, cream, cheese. Stir in onions and mushrooms. Pour into tart shell.
  7. Bake at 350°F (175°C) for 30-35 min until golden and set.

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