Buttery, tender shortbread bars filled with jostaberry, cloudberry, or lingonberry jam—three bright, fruity variations in one simple and customizable recipe.
1 cup plus 4 tablespoons (2 1/2 sticks) unsalted butter, melted and cooled until just warm
1 cup granulated sugar
3/4 teaspoon salt
2 large egg yolks
2 teaspoons vanilla extract
3 cups all-purpose flour
1 1/2 cups berry jams (jostaberry, cloudberry, lingonberry, or a mix)
Try blueberry, raspberry, apricot, or blackberry jam for variety.
Add lemon zest to the dough for a citrus twist.
Sprinkle sliced almonds on top for extra crunch.
Bars freeze well for up to 2 months.