Step 1
Sift the flour baking powder and salt together in a bowl; set aside.
Step 2
Beat the 1 cup butter with the sugar egg milk and vanilla extract in another bowl until well mixed.
Step 3
Gradually mix the flour mixture into the butter mixture.
Step 4
Shape the dough into a disk; wrap with plastic wrap and refrigerate for at least 2 hours.
Step 5
Working with half the dough at a time roll out dough to about 1/8-inch thick.
Step 6
Cut into cookies with a large heart shaped cookie cutter. Repeat with the remaining half of the dough.
Step 7
Cut the center of half of the cookies with a smaller heart shaped cookie cutter.
Step 8
Place an open centered cookie on top of a whole cookie to form a sandwich. Arrange cookies on an ungreased baking sheet; set aside.
Step 9
Preheat an oven to 400 degrees F (200 degrees C).
Step 9
Place the raspberry jam in a microwave save bowl and heat on high until jam is runny about 35 seconds.