Prepare Wet Ingredients: In a mixing bowl, whisk together 1/2 cup of lukewarm milk, 1 large egg, and 3 tablespoons of melted butter until smooth and creamy.

Combine Dry Ingredients: In a separate large bowl, mix 2 cups of all-purpose flour, 1/4 cup of sugar, and 2 teaspoons of instant yeast until well blended.

Form the Dough: Gradually pour the wet mixture into the dry ingredients, mixing until a slightly sticky dough forms, about 3-4 minutes.

First Rise: Cover the dough and let it rise in a warm area for 1.5 to 2 hours until doubled in size.

Shape the Donuts: Roll out the risen dough to 1/4 inch thick and cut out donut shapes, letting them rest for 30 minutes.

Heat Oil for Frying: Heat vegetable oil to 170-180°C (340-360°F) for frying.

Fry Donuts: Fry 2-3 donuts at a time for 2-3 minutes per side until golden.

Prepare the Cream Filling: Whip 1 cup of heavy whipping cream with 2 tablespoons of sugar until stiff peaks form.

Fill the Donuts: Slice a small opening in each cooled donut, optionally add condensed milk, and fill with whipped cream.

Finish with Dusting: Dust filled donuts with powdered sugar before serving.