In a bowl, mix 2 cups of all-purpose flour, 5 tablespoons of additional flour, baking powder, and salt.

In another bowl, cream the softened butter and granulated sugar until light and fluffy.

Add the separated egg yolks and vanilla extract to the butter mixture, mixing until combined.

Gradually add the flour mixture to the wet ingredients until a dough forms.

In a separate bowl, mash the thawed raspberries and mix with 1 tablespoon of granulated sugar.

Roll out the dough into a rectangular shape on a floured surface.

Spread the raspberry mixture evenly over the dough.

Roll the dough tightly into a log and refrigerate for about 30 minutes.

Preheat the oven to 350°F (175°C).

Slice the chilled log into cookies and place them on a baking sheet lined with parchment paper.

Sprinkle with Valentine colored nonpareil decors.

Bake for 12-15 minutes or until lightly golden.