- While the
cake is still warm, combine the remainder of the reserved apple juice (roughly 1/2 cup) with the 2 tablespoons of brown sugar in a small
sauce pan, and allow it to very gently simmer for a few minutes until glossy and reduced by almost half; pour this juice reduction over the
cake very slowly, allowing it to
absorb into the
cake, but don't worry if it doesn't completely
absorb — it will continue to do so as the
cake cools; allow the
cake to cool completely before glazing decoratively with the Sour Cream Drizzle, and garnishing with chopped walnuts, if desired.