In a mixing bowl, whisk together 1 cup of lukewarm milk, 1 beaten egg, and 2 tablespoons of melted butter until smooth and combined.

In a separate large bowl, combine 3 cups of all-purpose flour, 1/4 cup of sugar, and 1 tablespoon of instant yeast.

Gradually pour the wet ingredients into the dry mixture, stirring until a soft dough forms, then let rest for 5 minutes.

Transfer the dough to a lightly oiled bowl, cover with a damp cloth, and allow it to rise for 1.5 to 2 hours.

On a floured surface, roll out the dough to about 1/4 inch thick and cut out donut shapes.

In a deep frying pan, heat vegetable oil to 170-180°C (340-360°F).

Gently add the donuts to the hot oil, frying for about 2-3 minutes on each side until golden brown.

In a chilled mixing bowl, beat 1 cup of heavy whipping cream with 2 tablespoons of sugar until stiff peaks form.

Once cooled, cut each donut in half horizontally and fill with whipped cream.

Dust the filled donuts with powdered sugar before serving.