In a mixing bowl, combine 1 cup of lukewarm milk, 1 egg, and 1/4 cup of melted butter, stirring gently until well blended.

In a large bowl, whisk together 3 cups of all-purpose flour, 1/2 cup of sugar, and 2 teaspoons of instant yeast until evenly combined.

Gradually pour the wet ingredients into the dry ingredients, mixing gently with a spatula until a soft, sticky dough forms.

Transfer the dough to a greased bowl, cover with a towel, and let it rise in a warm area for 1.5 to 2 hours.

Once risen, lightly flour your countertop and roll out the dough to approximately 1/4 inch thick.

Using a donut cutter, cut out donut shapes from the rolled dough and place them on parchment paper.

Pour vegetable oil into a deep pot, heating it to about 170-180°C (340-360°F).

Carefully fry the donuts in small batches for 2-3 minutes on each side until golden brown.

While the donuts cool, beat 1 cup of heavy whipping cream with 2 tablespoons of powdered sugar until stiff peaks form.

Slice each cooled donut in half horizontally and spread condensed milk on the bottom half.

Fill each donut with whipped cream and dust with powdered sugar before serving.