Ingredients:
- 1 cup (240ml) Water
- ½ cup (113g) Unsalted Butter, cut into cubes
- ¼ teaspoon (1.5g) Salt
- 1 cup (120g) All-Purpose Flour, sifted
- 4 Large Eggs, at room temperature
- 1 ½ cups (360ml) Whole Milk
- ½ cup (100g) Granulated Sugar
- ¼ cup (30g) Cornstarch
- ¼ teaspoon (1.5g) Salt
- 4 Large Egg Yolks
- 2 tablespoons (30g) Unsalted Butter
- 1 teaspoon (5ml) Vanilla Extract
- 4 ounces (113g) Semi-Sweet Chocolate, finely chopped
- ½ cup (120ml) Heavy Cream
Instructions:
- Combine water, butter, and salt in a saucepan. Bring to a boil over medium heat, stirring until the butter is melted.
- Remove from heat and immediately add the sifted flour all at once. Stir vigorously with a wooden spoon until a smooth dough forms that pulls away from the sides of the pan.
- Transfer the dough to a mixing bowl and let it cool slightly for a few minutes. This prevents the eggs from scrambling.
- Add the eggs one at a time, mixing well after each addition. The dough should be smooth and glossy, and it should slowly fall from the spoon in a V shape.
- Transfer the dough to a piping bag or use two spoons to form mounds on a baking sheet lined with parchment paper or a silicone baking mat.
- Bake in a preheated oven until golden brown and puffed up. It's critical to not open the oven during baking!
- Let the baked choux pastry cool completely on a wire rack.
- Whisk together milk, sugar, cornstarch, salt, and egg yolks in a saucepan. Cook over medium heat, stirring constantly, until thickened. Remove from heat and stir in butter and vanilla extract. Cool completely, covering the surface with plastic wrap to prevent a skin from forming.
- Place chocolate in a heatproof bowl. Heat heavy cream in a saucepan until just simmering. Pour the hot cream over the chocolate and let it sit for a minute. Then, stir until smooth and glossy.
- Cut the cooled cream puffs or éclairs in half horizontally. Fill with pastry cream. Drizzle éclairs with chocolate ganache. Dust cream puffs with powdered sugar, if desired.