In a large bowl, cream together the butter and sugar until light and fluffy. Beat in the egg and vanilla extract.
In a separate bowl, sift together the flour, salt, and baking powder. Slowly add the dry ingredients to the wet ingredients and mix until a dough forms.
Roll out the dough on a lightly floured surface to 1/4 inch thick. Using a biscuit cutter or the rim of a glass, cut out circles of dough.
Place a teaspoon of jam in the center of each circle. Fold the dough over the jam and seal the edges with a fork.
Place the cookies on a greased baking sheet and bake at 350°F for 15-18 minutes, or until the edges are golden brown.
Remove from the oven and cool on a wire rack before serving.
Interesting Facts
This recipe has been around since the 1700s.
Jam-filled butter cookies are popular in many countries around the world.
These cookies are a great way to use up leftover jams.
Jam-filled butter cookies are a great treat for any occasion.