Smulpaj, from the Swedish words smula, meaning crumb, and paj, meaning pie, is a delicious Swedish crumb pie. It consists of a crumbly mixture poured evenly over diced fruits and berries (typically blueberries and raspberries).

It is flavored with sugar and cinnamon, then baked until crisp. This scrumptious Swedish treat is usually topped with whipped cream, vanilla custard, or ice cream. A crisp and crunchy crumb united with an irresistibly sweet and moist filling make smulpaj a popular treat served in many cafés throughout Sweden.