Combine butter, sugar and softened cream cheese and mix until blended. Blend in eggs, lemon juice and zest.
Add combined dry ingredients and mix well. Chill until dough is stiff.
Preheat oven to 350 degrees F (180 degrees C). Shape tablespoons of dough into balls. Place on ungreased cookie sheet and flatten slightly. Indent centers and fill with preserves. Bake for 15 minutes.
When the cookies have cooled, sprinkle with confectioners' sugar.
Ingredients: