1. In a large bowl, combine apples, onions, raisins, brown sugar, white sauce mix, and fines herbes; toss well. Place mixture in a 5-quart slow cooker; dot with butter. Cover and cook on Low heat setting for 12 hours.
2. Forty minutes before serving, preheat oven to 400 degrees F. Coat a baking sheet with no-stick cooking spray; set aside.
3. Unroll pastry sheet. Place Brie wheel in the center of the puff pastry and wrap cheese by bringing ends of pastry together toward the center of the wheel. Carefully turn cheese over, folding pastry ends securely under wheel. Lay on prepared baking sheet, folded side down. Bake for 25 minutes or until light golden brown. Let cool 10 minutes.
4. Serve pastry-wrapped Brie warm with caramelized onion and apple mixture.
Excerpted from the book, Sandra Lee Semi-Homemade Cocktail Time, by Sandra Lee