Heat oven to 350°F.
Combine all cookie ingredients except flour and baking powder in bowl. Beat at medium speed until creamy. Add flour and baking powder; beat at low speed until well mixed.
Shape dough into 1 1/4-inch balls. Place 2 inches apart onto ungreased cookie sheets. Make indentation in each cookie with thumb; rotate thumb to hollow out slightly
Combine all filling ingredients in bowl; fill each cookie with 1 rounded teaspoon filling. Bake 8-12 minutes or until lightly browned. Cool 1 minute on cookie sheets; remove to cooling rack.
These cookies can be made ahead and stored in the freezer up to 3 months. Place cookies in containers with tight-fitting lids, separating layers with waxed paper.