Preheat oven to 350°
Crumble almond paste by itself. Very important step.
Add sugar and 2 eggs. Beat until there are no lumps in the mixture.
Take room temperature butter and add to mixture.
Add remaining 4 eggs to batter.
Fold in the flour.
Place in greased jelly roll pan, 15X10 inch
Bake for 25 - 30 minutes or until light brown.
Cool completely.
When cool, use 1½ inch cookie cutter to cut out circles.
Mix buttercream frosting until smooth.
Using piping bag, pipe flower of frosting on top.