Preheat oven to 425F

Cream butter,add powdered sugar and mix thoroughly

Next, add egg, vanilla extract, salt and mix well

Finally add flour and mix well

Line a baking sheet with parchment paper, place the dough in a piping bag with star tip and pipe cookies into the baking sheet

Using a 1/4 thick stick gently press the Center of the cookie about half way making a little dent not a hole fill the Center with a little bit of jam

Bake until the sides of the cookies are starting to turn golden brown.