Soften the butter.

Warm the milk slightly. Crack one egg into a large mixing bowl.

Add the flour and the granulated sugar.

Add the vanilla sugar.

Add the salt.

Add the yeast on the opposite side of the bowl from the salt (they should not touch).

Pour in the milk. Briefly mix to combine, then knead the dough for 5 minutes.

Add the softened butter.

Knead for about 10 minutes until the dough is elastic and slightly sticky. Sprinkle with a little flour if needed.

Cover the bowl with plastic wrap and let the dough rise for 3 hours. Grease a brioche pan and dust with flour.

Punch down the dough, shape it into a ball, and place it in the prepared pan.

Beat the second egg and brush it over the dough. Cover and let rest for 1 hour. Preheat the oven to 350°F (180°C). Bake for 30 minutes.

Remove from the pan and let cool on a wire rack. Enjoy!