Orange Jam Swirl Cookies

Cookie dough:

1. Oranges: Wash, dry, and zest the oranges, but juice only one of them.
2. Beat the soft butter and the sugar in a large bowl until pale and fluffy. Add the egg, orange zest, and juice of 1 orange. Mix well.
3. Mix flour, salt, and baking powder in another bowl. Fold them into the butter mixture.
4. Combine quickly to form a dough, don’t overmix it.
5. Refrigerate dough: Form a ball, flatten it a bit, wrap it in plastic and refrigerate it for about 2 hours or until firm enough to roll.

Fill and cut:

1. Flour the working surface and the rolling pin.
2. Roll half of the dough into a rectangle. Spread ½ of the jam evenly on the dough and roll it into a sausage. Repeat with the other half of the dough.
3. Freeze cookie rolls: Wrap the rolls in plastic and place them in the freezer until about half frozen, my rolls needed about 1 ½ hour to reach a good cutting consistency.

Bake:

1. Preheat the oven to 180°C/ 350°F. Line two cookie sheets with parchment paper.
2. Remove the rolls from the freezer. Press them back into a nice shape if they have flattened at the bottom side.
3. Cut cookies: Unwrap and cut them into slices using a sharp knife. You will have about 30 cookies.
4. Bake: Place the swirl cookies on the prepared baking sheets and bake for about 10 minutes or until golden.
5. Rest: Remove the trays from the oven but leave the cookies on the tray for about 10 minutes before transferring them to a wire rack to cool completely.