½ cup milk, cottage cheese and sugar in a blender or food processor jar and blend till smooth.
Put egg whites, egg,
vanilla extract and remaining ½ cup milk in a shallow bowl and whisk till smooth.
mixture into 4 equal portions, spread 1 portion on each of 4 bread slices and top with the remaining 4 bread slices.
Heat ½ tbsp oil on a
large non-stick skillet over medium heat. Dip the sandwiches in egg mixture and place them on the skillet. Cook for 2 to 3 minutes, or till the underside of the sandwiches start to brown.
Drizzle the remaining
oil over the top of the sandwiches and turn. Cook for 2 to 3 minutes longer, or till the other side of the sandwiches are equally browned.
Transfer them onto
serving plates and serve immediately.