Prep Time 25 minutes mins
Cook Time 12 minutes mins
Resting Time 1 hour hr
Total Time 1 hour hr 37 minutes mins
For the cleanest swirl, keep both dough and jam cool—if the jam seems runny, chill it briefly before spreading so it doesn’t squeeze out while rolling. Use parchment underneath the dough to prevent sticking and to help roll it tightly, and rotate the log as you slice to maintain a round shape. If your kitchen is warm, pop the log back into the fridge midway through slicing to keep layers defined. You can freeze the unbaked logs for up to 2 months and bake from frozen by adding 1 to 2 minutes to the bake time. A touch of almond extract enhances the berry flavor, but omit if you prefer a pure vanilla shortbread.