1. Place bread in 6 (250-mL) ramekins sprayed with cooking spray; top with cheese.
2. Whisk remaining ingredients until blended; pour over cheese. Refrigerate overnight.
3. Heat oven to 375ºF. Bake filled ramekins, uncovered, 40 to 45 min. or until tops are puffed and knife inserted in centres comes out clean. Serve immediately.