Onion Mushroom Tart | Just A Pinch Recipes

Onion Mushroom Tart | Just A Pinch Recipes

www.justapinch.com

Heat olive oil in a large saute pan. Add onions stirring continuously until they start to soften. Add mushrooms, salt, and pepper. Stir until mushrooms release their liquid....

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Ingredients

  • 3 tablespoon(s) olive oil, extra-virgin
  • 2 large onions, cut in half and sliced thin
  • 1 pound(s) baby bella mushrooms, sliced
  • 1 teaspoon(s) salt
  • 1/4 teaspoon(s) pepper
  • 1/4 cup(s) white wine
  • 1 package(s) puff pastry sheet, thawed
  • 1 large egg + 1 Tbsp water beaten (egg wash)
  • 1 cup(s) grated Gruyère cheese

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