Combine all the ingredients in a mixer fitted with a paddle attachment and mix until smooth. Roll into 1 1/2-inch balls (the size of a walnut) and set aside on a plate. Refrigerate until ready to cook.
Just before serving, heat 2 to 3 inches of oil in a deep, heavy pot fitted with a deep-frying thermometer to 365°F (185°C). Working in batches to avoid crowding the pot, fry the balls until golden brown all over, moving them around in the oil to make sure they cook and brown evenly.
Remove from the oil and drain on paper towels or brown paper. Repeat with remaining beignets, making sure to let the oil return to 365°F (185°C) between batches. Dust the beignets with confectioners' sugar and serve warm.
Notes
Ricotta-Sweet Potato Beignets
The dough balls can be refrigerated for up to 1 day.