Butter a baking sheet large enough to hold the Brie.
Lay 5 sheets of phyllo on the baking sheet, brushing melted butter on each layer as you go. Set the Brie on top of the phyllo and fold the edges of the phyllo up around the cheese.
Cover the top of the cheese with 6 sheets of phyllo, brushing melted butter on each layer. Tuck the ends of the pastry