Banana-Sweet Potato Casserole

INGREDIENTS:

2 tb Plus 1/4 cup (1/2 stick)
-unsalted butter
2 tb Plus 1/2 cup sugar
2 tb Water
2 lg Ripe bananas, peeled, cut
-into 1/2-inch-thick rounds
1 Unsliced loaf egg bread
-(1-pound), ends trimmed,
-bread cut into 6 slices
-(each about 1-1/2 inches
-thick)
2 c Milk (do not use low-fat or
-nonfat)
6 lg Eggs
2 1/2 ts Ground cinnamon
1/4 ts Vanilla extract