Instructions

1. In a small bowl, combine yeast, 1 tablespoon of the sugar, and 1/2 cup warm water. Let stand for 10 minutes to activate!
2. Combine flour, warm milk, egg and egg yolk, salt, activated yeast mixture, and remaining 3 tablespoons sugar — mix to combine. You can use a food processor or stand-up mixer. Add softened unsalted butter; process until smooth and combined. The dough will be softer.
3. Place dough in a lightly greased bowl; cover and chill in refrigerator overnight or approx 6-8 hours.
4. On a floured surface, roll the dough out to be around 1/2 inch thick. Using a 2-1/2-inch round cutter or a glass/mug, cut dough. Re-roll dough as is necessary. Place dough rounds on a baking sheet, dusted with flour. Cover and let rise about 20 minutes or until nearly double in size. Depending on your room temperature, this could take a while, so I suggest warming up your oven to allow the dough to double in size faster. I would say to preheat from 100F to 150F and turn it off. This will ensure that the dough will have a warmer area to rise.
5. Place chocolate spread in a decorating bag fitted with a large round tip; set aside.
6. Fry donuts, three to four at a time, in deep hot oil for about one minute on each side or until golden brown; you can flip it one time until the golden color is achieved. Make sure the frying oil is always between 365 F and 375°F.
7. Take donuts out by using a slotted spoon or two forks; drain on paper towels- Using an instant-read thermometer, the internal temp of donuts should be about 87 °F/31 °C.
8. Holding each doughnut, use a cylindrical rod aka dowel, chopstick, or similar to poke a hole in one side of the doughnut. Pipe any chocolate spread through the opening.
9. Dust with sugar and serve warm.