Instructions:

In a small bowl, dissolve yeast in the warm milk and let sit for 5 minutes until foamy.

In a stand mixer bowl, combine flour, sugar, salt, eggs, vanilla, and softened butter. Add the yeast mixture and knead until a smooth dough forms, about 5–7 minutes.

Cover the bowl with a towel and let the dough rise until doubled, about 1–2 hours.

Punch down the dough, roll out to about 1/2 inch thick, and cut rounds with a donut cutter or biscuit cutter.

Place on a lined baking sheet and let rise again for 30–45 minutes until puffy.

Heat oil to 350°F (175°C) in a deep fryer or large pot.

Fry each donut for about 1–2 minutes per side until golden brown.

Drain on a cooling rack lined with paper towels.

Once slightly cooled, fill with jam using a piping bag.

Dust with powdered sugar and serve warm.