Butter cookies stuffed with sweet potato

As accompaniment of tea, the best recipe to share with friends.
Originally seen at tea and oranges

Ingredients: 
Mass of butter cookies

• 230 g of confectionery flour 
• 150 grams of soft butter 
• 125 g of sugar 
• 25 grams of vanilla sugar
• 1 whole egg 
• A pinch of salt 

Filling:

• 300 g of cooked sweet potato peeled and mashed 
• 60 g of honey 
• 3 g of cinnamon (1 teaspoon) 
• a pinch of salt 
• zest of a whole lemon

2 tablespoons milk (to paint cookies before you bake)

Preparation:

1. In a bowl, beat the butter, sugar and salt until it becomes a creamy mass. 
2. add flour and mix until the dough is grainy. 
3. after pour the egg and stir until the dough binds. 
4. put into a bowl, cover and let stand in refrigerator while preparing filling. 
5. for the filling mix together the ingredients with the help of a spoon
6. stretch the dough with a roller and cut the shape of the biscuits
7. the cover will be a circle of larger diameter to cover the stuffing
8. put them on an oven tray and paint it with milk
9. bake it at 180 ° C 16min or until the edges change color
     
   powdered sugar for decoration and you're ready