Almond Butter Cake (or in Dutch, Boter Koek), is a buttery tart pastry with almond filling, butter, and honey baked into a golden round cake. Sliced almonds and sugar crystals are sprinkled on top. It is so rich and delicious it may be difficult to stop after your first small bite. This 9-inch(small) or 11-inch(large) round cake may be sliced into wedges for serving.