01 -
Turn the oven to 425°F and let it heat up. Use parchment paper to line a baking tray, marking it with 4-inch strips about 2 inches apart. Flip the paper so the marker doesn’t transfer.
02 -
Use a sifter to mix cornstarch and gluten-free flour. In a separate bowl, beat the eggs lightly.
03 -
Warm water, butter, sugar, and salt in a pot over medium heat until it boils gently. Take it off the heat, pour in the flour blend quickly, and stir until it clumps into a ball. Put it back on a low flame, stirring constantly for 2 minutes to help dry it a little.
04 -
Scoop the dough into a mixer with a paddle attachment. Let it cool for 10 minutes. Add the beaten eggs a bit at a time, mixing well until it’s smooth and forms a V shape when you stretch it. Depending on how it looks, you’ll need 3 or 4 eggs.
05 -
Pipe the dough into 4-inch strips on your baking tray. Brush the tops with the egg wash. Cook for 10 minutes at 425°F, then lower the heat to 350°F and bake another 25 minutes. Make small holes in each one to let steam escape and bake for 5 more minutes. Let cool totally.
06 -
Gently simmer milk and vanilla on medium for about 10 minutes. In a bowl, whisk egg yolks with cornstarch, sugar, and salt. Slowly pour in some of the hot milk to temper, then pour everything back into the pot. Stir until it thickens up. Add the butter and immediately cool over ice with plastic wrap pressed to the surface.
07 -
Pour hot cream over the chocolate chips in a small bowl, adding in butter and corn syrup. Stir everything until it’s totally smooth. Let it cool just a bit.
08 -
Using a piping bag, fill each cooled pastry shell with the prepared cream. Dunk the tops of each one into the chocolate glaze and allow them to firm up on a rack. Eat within 12 hours, or store in the fridge for 24 hours max.