Go Back
+ servings
caramelized onion and mushroom tart
Print Recipe Add to Collection
4.63 from 8 votes

Caramelized Onions and Mushrooms Tart with Blue Cheese

Caramelized Onions and Mushrooms Tart with Blue Cheese - simple tart made with puff pastry topped with caramelized onions, mushrooms and blue cheese.
Prep Time10 mins
Cook Time55 mins
Total Time1 hr 5 mins
Course: Appetizer
Cuisine: American
Keyword: mushroom tart, onion and mushroom tart
Servings: 4 servings
Calories: 501kcal


  • 1 tablespoon olive oil
  • 1 large onion sliced
  • 1 tablespoon butter
  • 1 pound mushrooms cleaned and sliced
  • salt and pepper to taste
  • ¼ cup white wine
  • 1 sheet puff pastry thawed
  • ½ cup blue cheese


  • Heat the oil and butter in a pan. Add the onion and cook until it starts to caramelize, about 20 minutes.
  • Add the mushrooms and saute until they start to caramelize, about 20 minutes.
  • Season with salt and pepper and add the wine, deglaze the pan and cook until it has evaporated.
  • Roll the puff pastry out to a 12x12 inch rectangle.
  • Preheat oven to 400 F degrees.
  • Score a line around the puff pastry 1 inch from the edge.
  • Spread the blue cheese over the middle of the puff pastry and then spread with the onion and mushroom mixture.
  • Bake until the a the pastry is golden brown, about 15-25 minutes.


Serving: 1serving | Calories: 501kcal | Carbohydrates: 35g | Protein: 12g | Fat: 35g | Saturated Fat: 11g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 18g | Trans Fat: 1g | Cholesterol: 20mg | Sodium: 355mg | Potassium: 493mg | Fiber: 3g | Sugar: 4g | Vitamin A: 217IU | Vitamin C: 4mg | Calcium: 107mg | Iron: 2mg