01 -
Blend flour, sugar, butter, eggs, and yolk in a food processor until it holds together. Lightly knead on floured counter until soft.
02 -
Pop the dough into the fridge for a half hour. In the meantime, freeze teaspoon-sized Nutella dollops on parchment until firm (about 20-30 minutes).
03 -
Heat oven to 350°F (180°C). Lay parchment onto baking trays. Roll dough out to about 1/8-inch thickness.
04 -
Cut dough into 3½-inch rounds. Spoon frozen Nutella in the center of half the circles, cover with another circle, and slit top for steam to escape. Press edges with a fork and brush on egg wash.
05 -
Cook for 20-25 minutes till they’re golden brown. Dust with powdered sugar and enjoy warm or cool.