Preheat oven to 350°F (175°C).
In a large bowl, cream together butter and granulated sugar until light and fluffy.
Mix in ½ teaspoon almond extract.
Gradually add flour, mixing until just combined.
Roll dough into 1-inch balls and place on a baking sheet.
Make an indentation in the center of each ball with your thumb.
Fill each indentation with raspberry jam.
Bake for 14-18 minutes, or until edges are lightly golden.
Let cookies cool on a wire rack.
In a small bowl, mix powdered sugar, milk, and ¼ teaspoon almond extract to make a glaze.
Drizzle glaze over cooled cookies.