01 -
Stir the warm milk, yeast, and 1 tablespoon of the sugar together in the bowl of a stand mixer. Let stand for 5-10 minutes, until foamy.
02 -
Add the flour, remaining sugar, salt, egg, and softened butter. Mix with a dough hook on low until combined, then knead for 4-5 minutes until smooth. Cover and let rise until puffy, about 1 hour.
03 -
Mix the cold butter with 2 tablespoons flour just until pliable. Press between parchment into a 6 by 8 inch rectangle. Chill for 20-30 minutes, until firm but bendable.
04 -
Roll the chilled dough into a rectangle slightly larger than the butter block. Enclose the butter, seal the edges, roll into a long rectangle, and fold in thirds like a letter. Wrap and chill 30 minutes. Repeat the roll, fold, and chill process 2 more times.
05 -
Roll the dough to about 1/2 inch thick. Cut 8 rings with a 3 inch cutter and a 1 inch center cutter. Place on parchment squares and proof at cool room temperature for 45-75 minutes, until puffy and light.
06 -
Heat oil in a heavy pot to 350°F. Fry 2-3 cronuts at a time for 90 seconds to 2 minutes per side, until deep golden and puffed. Drain on a rack.
07 -
Mix granulated sugar with cinnamon. Roll the warm cronut sides in the cinnamon sugar. Whisk powdered sugar, milk, vanilla, and salt into a pourable glaze, then dip the tops and let set briefly.