Using the whisk attachment, mix softened butter, eggs, sugar, and extracts on high for 4-5 minutes, until thick and pale.
In a separate bowl, combine flours and baking powder.
Exchange whisk for paddle attachment, and gradually add flour mixture. As dough thickens, switch to a dough hook, or start kneading by hand. Add pecans.
Knead for 3-4 minutes, until soft and not sticky.
Shape into a 4" by 13" rectangle on the pan.
Bake for 23-26 minutes, until golden brown.
Cool until lukewarm, and cut into ½-1 inch slices.
Arrange ½ inch apart on baking sheet and bake at 270° for 45 minutes.
Cool and dip in melted chocolate. Garnish as desired.
Notes
You can mix and match whatever kind of garnishes/filling you'd like! Or leave them plain if you don't need the extra sweetness.