甜甜圈 Nutella Stuffed Donuts

Nutella stuffed donuts ingredients
For making 25 small donuts
Eggs: 2
Egg yolks: 2
Sugar: 35 g, 3 tablespoons
Salt: 1/8 teaspoon
Milk: 150 g
Yeast: 1 teaspoon
Bread flour or all purpose flour: 400 g
Unsalted butter: 50 g
Nutella
Sugar
Cinnamon powder
Oil