HEAT oven to 500°F. BEAT eggs and milk in large bowl until blended. POUR 1/2 of the egg mixture into 13 x 9 x 2-inch baking pan. PLACE 6 bread slices in pan; turn slices over and let stand until egg mixture is absorbed. PLACE bread in single layer on well-greased baking sheet.
To freeze: Cool French toast on wire racks. Return to baking sheets; freeze in single layer 1 to 2 hours. Wrap well, individually or stacked; freeze up to 1 month.
To reheat frozen French toast: Single servings can be reheated in the toaster. To reheat more servings, unwrap slices, place on baking sheets and bake in preheated 375°F oven until hot, 8 to 10 minutes.