01 -
Mix flour, sugar, yeast, salt, egg, milk, and vanilla. Knead until smooth, then add butter and continue kneading until elastic (about 15 minutes total).
02 -
Place dough in oiled bowl, cover with plastic wrap. Let rise until doubled, about 60 minutes.
03 -
Heat milk, then mix with egg yolks, sugar, and cornstarch. Cook until thickened. Add vanilla and cover surface with plastic.
04 -
Divide dough into 2.5oz (70g) portions, shape into balls. Place on parchment squares and cover.
05 -
Let donuts rise again until puffy, 20-40 minutes.
06 -
Fry at 325-350°F for about 2 minutes per side until golden. Cool completely.
07 -
Whip cream with powdered sugar until stiff, fold into cooled custard.
08 -
Coat cooled donuts in powdered sugar, then fill with Bavarian cream.