Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.
In a large bowl, cream together the softened butter and granulated sugar until light and fluffy. Mix in the vanilla extract.
Gradually add in the flour and salt, mixing until the dough comes together.
Roll the dough out on a floured surface to about 1/4-inch thickness. Cut out cookies with a round cookie cutter. Use a smaller cutter to cut out the centers of half the cookies.
Transfer the cookies to the prepared baking sheet. Bake for 10-12 minutes or until slightly golden around the edges. Let them cool completely.
Spread raspberry jam on the whole cookie bases, then place the cut-out cookies on top, pressing down gently to create a sandwich.
Dust the top of the cookies with powdered sugar before serving.