In a large mixing bowl, combine all-purpose flour, granulated sugar, salt, and fresh yeast. Gradually add lukewarm milk, beaten eggs, and melted butter, mixing until a shaggy dough forms.

Transfer the dough to a floured surface and knead for about 10 minutes until smooth and elastic.

Place the kneaded dough in a lightly oiled bowl, cover, and let it rise in a warm place for about 1 hour.

Gently punch down the dough, roll it out to about ½ inch thick, and cut out donut shapes.

Allow the shaped donuts to rest for an additional 30 minutes, covered lightly.

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

Fry each donut for about 2-3 minutes on each side until golden brown.

Let the donuts cool on paper towels.

Fill the cooled donuts with whipped cream using a piping bag.

Dust with powdered sugar before serving.