Ingredients:
- 1 cup (240ml) water
- 1/2 cup (113g) unsalted butter, cut into cubes
- 1/4 teaspoon salt
- 1 cup (120g) all-purpose flour, sifted
- 4 large eggs, at room temperature
- 2 cups (480ml) whole milk
- 1/2 cup (100g) granulated sugar
- 1/4 cup (30g) cornstarch
- 1/4 teaspoon salt
- 4 large egg yolks
- 1 teaspoon vanilla extract
- 2 tablespoons (28g) unsalted butter, cut into cubes
- 8 ounces (225g) semi-sweet chocolate, finely chopped (aim for around 60-70% cocoa)
- 1 cup (240ml) heavy cream
Instructions:
- Combine water, butter, and salt in a saucepan. Bring to a boil.
- Remove from heat and immediately add all the flour. Stir vigorously with a wooden spoon until a smooth dough forms and pulls away from the sides of the pan.
- Cool the dough slightly (a few minutes).
- Gradually add eggs, one at a time, mixing well after each addition until the dough is smooth, glossy, and forms a ribbon when lifted with the spoon.
- Preheat oven to 400°F (200°C). Line baking sheet with parchment paper or silicone mat.
- Transfer the dough to a piping bag fitted with a round tip.
- Pipe 4-inch (10cm) long strips of dough onto the prepared baking sheet, spacing them about 2 inches (5cm) apart.
- Bake for 15 minutes, then reduce oven temperature to 350°F (175°C) and bake for another 20-25 minutes, or until golden brown and puffed up. Do not open the oven door during baking!
- Turn off the oven, prop the door open slightly, and let the eclairs cool in the oven for about 30 minutes to prevent them from collapsing.
- Transfer to a wire rack to cool completely.
- In a saucepan, heat milk until almost simmering.
- In a separate bowl, whisk together sugar, cornstarch, and salt.
- Whisk in egg yolks until pale and smooth.
- Slowly drizzle a small amount of the hot milk into the egg yolk mixture, whisking constantly to temper the eggs.
- Pour the tempered egg mixture back into the saucepan with the remaining milk.
- Cook over medium heat, whisking constantly, until the mixture thickens and comes to a boil. Continue to cook for 1 minute, whisking vigorously.
- Remove from heat and stir in vanilla extract and butter until smooth.
- Pour the pastry cream into a bowl, cover with plastic wrap (pressing the wrap directly onto the surface to prevent a skin from forming), and refrigerate for at least 30 minutes, or until completely chilled.
- Place chopped chocolate in a heatproof bowl.
- Heat heavy cream in a saucepan until almost simmering.
- Pour the hot cream over the chocolate and let it sit for 1 minute to melt the chocolate.
- Gently whisk the mixture until smooth and glossy.
- Once the eclairs and pastry cream are completely cooled, use a small knife or piping tip to create holes in the bottom of each eclair.
- Fill a piping bag with the chilled pastry cream and pipe into the eclairs until they are full.
- Dip the top of each eclair into the chocolate ganache.
- Place the eclairs on a wire rack to allow the ganache to set.