Combine sugar, butter and almond extract and beat on medium speed until creamy.
Add flour and beat until well mixed.
Cover and chill dough for at least one hour.
Preheat oven to 350 degrees.
Shape into one inch balls and place two inches apart on cookie sheet.
With thumb, make an indentation in the center of each cookie.
Fill with 1/4 teaspoon jam.
Bake for 14-18 minutes.
Mix together glaze ingredients until smooth and drizzle over the cooled cookies.