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Classic French flan pâtissier with a golden pastry crust and creamy vanilla custard filling, sliced and served on a plate.

Authentic Flan Pâtissier Recipe – French Custard Tart Dessert

Flan Pâtissier, also known as French custard tart, is a traditional pastry featuring a rich, creamy vanilla custard baked inside a buttery crust. Smooth, indulgent, and elegant, this dessert is a staple in French patisseries and makes a delightful treat for special occasions or everyday indulgence.
Prep Time 25 minutes
Cook Time 45 minutes
Total Time 3 hours 10 minutes
Course Dessert
Cuisine European, French
Servings 10 slices
Calories 300 kcal

Equipment

  • Tart pan (9–10 inch)
  • Rolling Pin
  • Mixing bowls
  • Whisk
  • Saucepan
  • Baking beans (for blind baking)
  • Parchment paper

Ingredients
  

  • 1 sheet pâte sucrée (sweet shortcrust) or puff pastry
  • 4 cups whole milk
  • 1 cup heavy cream
  • 1 vanilla bean (or 2 tsp vanilla extract)
  • ¾ cup sugar
  • 6 large eggs
  • ½ cup cornstarch
  • Pinch of salt

Instructions
 

  • Prepare pastry base: Roll out pastry and fit into tart pan. Chill for 30 minutes. Blind bake at 350°F (175°C) for 15 minutes with parchment and baking beans. Remove beans and bake another 5 minutes until lightly golden.
  • Make custard: Heat milk, cream, sugar, and vanilla in a saucepan until warm. In a bowl, whisk eggs, cornstarch, and salt. Slowly pour warm milk mixture into eggs, whisking constantly. Strain to remove lumps.
  • Fill and bake: Pour custard into cooled pastry shell. Bake at 350°F for 35–45 minutes until custard is set but jiggles slightly in the center.
  • Cool and set: Allow tart to cool at room temperature, then refrigerate for at least 2 hours.
  • Slice and serve: Cut into wedges with a sharp knife, wiping blade between slices for clean edges.

Notes

  • Variations: Add melted chocolate for a chocolate custard, swirl caramel, or top with seasonal fruits.
  • Make-Ahead: Best baked the day before and chilled overnight.
  • Storage: Refrigerate up to 3 days in airtight container. Freeze for up to 1 month, thaw slowly in fridge.
  • Expert Tip: Bake until custard jiggles slightly in the center—this ensures a creamy texture once cooled.
Keyword baked custard, flan pâtissier, French custard tart, Parisian flan, vanilla tart