Preheat oven to 400°
Toast walnuts and chop.
Spread out crescent roll dough on a parchment lined cookie sheet and place brie wheel in the center.
Spread raspberry preserves over the top of the cheese. Sprinkle with toasted walnuts and rosemary.
Fold dough up and around the brie wheel. Do not cover completely.
Beat one egg and wash over the top of the dough.
Bake for 25-30 minutes or until golden brown.
Serve with crackers. This can also be cut into pie shaped pieces and served as individual portions. It's good enough to eat on it's own without crackers.