Step 1: Preparing the Filling Start by warming 2 cups of whole milk until it’s steaming don’t let it boil. In a separate bowl, whisk 6 large egg yolks with 2/3 cup granulated sugar until they’re light and well combined, then mix in 1/4 cup cornstarch. Gradually add the hot milk to the egg mixture to temper it, stirring constantly to prevent curdling. Learn more about perfect pastry cream. Return everything to the saucepan, cook over medium-high heat while whisking until it thickens and just starts to boil. Remove from heat, stir in 1 tablespoon cold unsalted butter and 1 1/2 teaspoons vanilla extract, then strain into a bowl. Cover with plastic wrap touching the surface and chill for at least 2 hours or overnight. This step ensures a smooth, creamy filling that’s worth the wait.

Step 2: Making the Pastry Preheat your oven to 425°F and line a baking sheet with parchment paper. In a saucepan, bring 1 cup water, 1 stick unsalted butter, 1/2 teaspoon salt, and 1 1/2 teaspoons granulated sugar to a boil. Remove from heat and stir in 1 cup all-purpose flour until the dough forms and pulls away from the sides. Return to heat for about 30 seconds, stirring to dry it out a bit. Transfer to a mixer and beat at medium speed, adding 3 to 4 large eggs one at a time until the dough is smooth, glossy, and drops in a ribbon for the egg wash, beat the extra egg with 2 teaspoons water. Pipe the dough into 10-12 logs that are 1 inch wide and 4 inches long, spaced 2 inches apart on the sheet. Brush with egg wash and bake for 15 minutes at 425°F, then reduce to 375°F, rotate the pan, and bake for another 25 minutes until golden and puffed. Let them cool completely before filling. Discover how to make perfect choux pastry for even better results.

Step 3: Creating the Chocolate Glaze For the glaze, heat 1/4 cup heavy whipping cream until it boils, then pour it over 2 ounces of finely chopped semisweet baking chocolate. Stir until smooth, and mix in 1/4 teaspoon vanilla extract and 2 teaspoons corn syrup if you’re using it for extra shine.

Step 4: Assembling Your Eclairs Once everything is ready, split the cooled pastry shells lengthwise. Dip the top halves into the chocolate glaze and set them on parchment to firm up. Fill the bottom halves with the chilled pastry cream using a piping bag. When the glaze sets, place the tops on the filled bottoms. You can serve them right away or cover and refrigerate for up to 2 days. All in, this takes about 25 minutes prep, 2 hours 20 minutes inactive for chilling, 45 minutes baking, and roughly 3 hours 30 minutes total totally doable for a fun baking session.