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Eclairs

Ruth M. MoranRuth M. Moran
Delight in perfectly crisp French éclairs filled with a luscious, stabilized mascarpone Chantilly cream and topped with a glossy dark chocolate glaze. This classic pastry recipe combines traditional choux dough baking techniques with rich, creamy fillings, delivering elegant, bakery-style éclairs right from your kitchen. Ideal for special occasions or everyday treats.
Prep Time 45 minutes
Cook Time 2 hours
Cooling Time 45 minutes
Total Time 3 hours 30 minutes
Course Dessert
Cuisine Australian, British, French
Servings 20 éclairs

Equipment

  • 1 Stand mixer with whisk attachment
  • 1 Piping bag with 15 mm star tip
  • 1 Medium saucepan (for choux dough)
  • 3 Baking trays lined with parchment paper
  • 2 Heatproof mixing bowls (for chocolate glaze and mixing)

Ingredients
  

For the Choux Pastry:

  • 100 g 7 tbsp unsalted butter, cut into small cubes
  • 1 cup 240 ml water
  • 1 cup 130 g all-purpose flour
  • A pinch of kosher or cooking salt
  • 4 large eggs room temperature (approx. 55-60 g each)

For the Chocolate Glaze:

  • 100 g 3.5 oz dark chocolate (70% cocoa), finely chopped
  • cup 160 ml heavy cream (minimum 35% fat)
  • 3 ½ tsp corn syrup or liquid glucose

For the Stabilized Chantilly Cream Filling:

  • 3 cups 720 ml heavy cream or whipping cream (min. 35% fat)
  • 1 cup 240 g mascarpone cheese (high quality, full fat)
  • 1 ⅔ cups 200 g sifted powdered sugar
  • 2 tsp vanilla bean paste or extract or seeds from 2 vanilla pods

Instructions
 

  • Preheat and Prepare: Set your oven to 180°C (350°F), or 160°C (320°F) if using a fan-forced oven. Arrange oven racks in the upper and lower thirds. Lightly grease 3 baking sheets and line them with parchment paper.
  • Cook the Dough Base: In a medium saucepan, melt the cubed butter over medium heat. Once it’s almost melted, add the water and bring the mixture to a gentle simmer.
  • Add Flour and Form Dough: Remove the pan briefly from heat, then stir in the flour and salt all at once. Return the pan to medium heat and stir vigorously with a wooden spoon. The dough will become pasty and then quickly form a sticky ball that pulls away from the sides. Remove from heat and let it cool for exactly 10 minutes.
  • Incorporate Eggs: Add eggs one by one to the cooled dough, stirring vigorously after each addition until fully combined. The dough will appear separated at first but will come together into a thick, sticky paste that holds its shape when done.
  • Pipe the Pastry: Fill a piping bag fitted with a 15 mm star tip with the dough. Pipe long logs about 12-14 cm (5 inches) in length, 2.5 cm (1 inch) wide, spaced about 5 cm (2 inches) apart on the baking sheets to allow room for puffing.
  • Bake and Crisp: Bake two trays simultaneously for 45 minutes. At 30, 35, and 40 minutes, briefly open the oven door for 2 seconds to release steam — this helps create crisp pastry. Remove the trays after 45 minutes and allow the éclairs to cool completely on the trays.
  • Prepare Chocolate Glaze: Place chopped chocolate in a heatproof bowl. Warm the cream and corn syrup together in a small saucepan until just below boiling. Pour the hot cream mixture over the chocolate and let it sit for 1 minute. Stir gently with a rubber spatula until smooth and glossy.
  • Dip Éclair Tops: Carefully dip the top half of each cooled éclair into the chocolate glaze, letting excess drip off. Place glazed tops on a tray and refrigerate for 30 minutes until set.
  • Whip the Filling: Combine heavy cream, mascarpone, powdered sugar, and vanilla in a chilled bowl. Using an electric mixer on medium-high speed, whip until stiff peaks form, creating a thick, stable cream.
  • Assemble the Éclairs: Slice each éclair horizontally. Using a piping bag fitted with a star tip, pipe generous amounts of the stabilized cream into the base. Place the chocolate-coated top back on and serve immediately or chill until serving.

Notes

  • Egg Temperature: Use room-temperature eggs for best incorporation and dough consistency. If eggs vary in size, whisk them together and measure 200 ml for accuracy.
  • Chocolate Choice: Opt for 70% cocoa chocolate for a rich, slightly bitter glaze. Adjust cream quantity if using softer chocolate types like chips or melts.
  • Cream Fat Content: Ensure cream has at least 35% fat to achieve proper whipping and rich texture in both filling and glaze.
  • Mascarpone Quality: Use a reputable brand of mascarpone that is thick and creamy, not runny, for effective stabilization of the Chantilly cream.
  • Make Ahead: Choux pastry can be baked and stored airtight for up to 3 days; re-crisp in a 160°C oven for 5 minutes before assembling. The stabilized cream keeps fluffy for 48 hours refrigerated. Assemble just before serving for best texture.
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