6 sliced croissants
8 oz. Brie
1 1/2 lb. cooked, sliced roast beef
4 lettuce leaves
Mayonnaise

Set Brie out of reach at room temperature. Slice croissants lengthwise, toast lightly. Spread Brie on halved croissant bottoms; spread mayonnaise on the other halves. Place the rare, thin sliced roast beef on Brie halves, add a leaf of lettuce to each, top with mayonnaise halves.