Steps
1. In a mixing bowl, cream the softened butter, granulated sugar, and brown sugar until light and fluffy.
2. Stir in the vanilla extract.
3. In another bowl, whisk together the flour, baking powder, and salt.
4. Gradually add the dry ingredients to the butter mixture, mixing until a dough forms.
5. Roll the dough into a rectangle on a sheet of parchment paper, about 1/4 inch thick.
6. Drizzle caramel sauce over the dough and spread it evenly, leaving a small border.
7. Carefully roll the dough into a tight log using the parchment paper to help.
8. Chill the log in the refrigerator for 30 minutes.
9. Preheat your oven to 350°F (175°C).
10. Slice the chilled log into 1/4-inch thick rounds and place them on a baking sheet lined with parchment paper.
11. Sprinkle sea salt flakes on top if desired.
12. Bake for 10-12 minutes or until lightly golden. Allow to cool on a wire rack.