Grease a 12-inch round oven-safe pan. Take the brie out of the box it comes in (put the brie in another container and refrigerate). Place the brie box in the center of the pan.
Space the frozen dough balls in a ring around the brie box, about 1/2 inch apart (you want them to touch once they rise). Cover loosely with greased plastic wrap or a clean towel.
Let rise at room temperature for 2-3 hours, until the balls have doubled in size. For an overnight option, leave them covered in the fridge and let them sit at room temperature for about 45 minutes in the morning, until doubled in size.
Heat the oven to 350°F(175°C).
Get the brie out of the refrigerator and cut the rind off the top (or make a crosshatch pattern across the top instead). Replace the box in the center with the actual brie. Do not bake it in the box, unless the box is oven-safe.
Whisk the egg with the water and brush it gently over the risen dough.
Bake for 25-30 minutes, until the rolls are deep golden brown and the brie is soft and gooey. Check at 20 minutes and tent with foil if the tops are browning too fast.
Mix the melted butter with the garlic and rosemary. Brush it over the hot rolls. Finish with flaky sea salt.
Spoon the cranberry sauce over the brie.
Garnish with some pomegranate arils and rosemary sprigs for color.
Notes
Keep the ring tight: The dough balls need to touch while rising so they bake into one pull-apart wreath. Gently nudge them together after thawing if there are gaps.