Follow these simple steps to make perfect jelly donuts:

1. Prepare the Dough: In a large mixing bowl, combine all-purpose flour, sugar, instant yeast, and salt.
2. Mix Wet Ingredients: Add warm milk, eggs, melted butter, and vanilla extract into the dry ingredients. Stir until a dough begins to form.
3. Knead the Dough: Transfer the dough to a lightly floured surface. Knead for about 5-7 minutes until smooth and elastic.
4. First Rise: Place the dough in a greased bowl, cover it with a clean cloth, and let it rise in a warm place for about 1 hour, or until doubled in size.
5. Shape the Donuts: Punch the dough down and roll it out to about ½ inch thick. Use a round cutter to cut out donut shapes, then place them on a baking sheet lined with parchment paper.
6. Second Rise: Cover the donuts again and let them rise for another 30 minutes until fluffy.
7. Heat the Oil: In a deep pot or frying pan, heat vegetable oil to 350°F (175°C). Ensure it’s deep enough for the donuts to float.
8. Fry the Donuts: Carefully place a few donuts in the hot oil, frying them for about 2-3 minutes on each side or until golden brown.
9. Drain on Paper Towels: Once fried, remove the donuts from the oil and let them drain on paper towels.
10. Fill with Jelly: Allow the donuts to cool slightly before filling. Use a piping bag or a small squeeze bottle to inject your desired jelly into each donut.
11. Dust with Powdered Sugar: Finally, dust the warm donuts with powdered sugar for that attractive finish.

With these steps, you will effortlessly create a batch of jelly donuts that are not only delightful but also a feast for the eyes.