01 -
In a large bowl, combine active dry yeast, warm water, and granulated sugar. Allow the mixture to sit for approximately 5 minutes, or until it becomes foamy.
02 -
Incorporate buttermilk, egg, melted butter, and all-purpose flour into the yeast mixture. Mix until a smooth dough forms, then cover and let it rise in a warm location for about 1 hour, or until doubled in volume.
03 -
Turn the dough out onto a lightly floured surface and gently roll to a 1/2-inch thickness. Cut dough into squares using a sharp knife or pastry cutter.
04 -
Heat oil in a deep pot to 350°F (175°C). Fry beignet squares in batches 1–2 minutes per side, or until golden brown and puffed. Transfer to a paper towel-lined plate to drain excess oil.
05 -
In a medium bowl, whisk together powdered sugar, milk, and vanilla extract until smooth. While beignets are still warm, dip each into the glaze, allowing any excess to drip off before serving.