Soft Butter Poppy Roll! Melts in your mouth! Simple and very tasty! Baking for tea

Ingredients:
Flour ~ 300 g
Egg 1 pc
Milk 120 ml
Sugar 80 g
Butter 50 g
Dry yeast 5 g
Vanilla sugar 8 g
Salt to taste
Vegetable oil 1 tbsp
FILLING:
Poppy dry food 200 g
Sugar 120 g (to taste)
Butter 30 g
Protein 1 pc
FOR LUBRICATION
Yolk 1 pc
Milk 1 tbsp
Butter 20 g
Bake at 180° ~ 35 minutes. Baking time and temperature will vary depending on the oven.