Step 1. Heat oven to 425F.

Step 2. Microwave cheese and butter in medium microwaveable bowl on high 1 min. or until butter is melted.

Step 3. Bake 13 to 14 min. or until edges of desserts are firm but centers are still soft. Let stand 1 min. Carefully run knife around cakes to loosen; invert into dessert plates. Serve warm with cool whip.