2 slices whole wheat bread, cubed
1 c. shredded cheddar cheese
1 can tuna, drained
3/4 c. milk
2 eggs, separated
1 tbsp. lemon juice
1 tsp. chopped onion
1/2 tsp. salt
3 tbsp. butter, melted

Mix 1 1/2 cups bread, cheese, tuna, milk, egg yolks, lemon juice, salt and onion. Beat egg whites until stiff, fold into the tuna mixture. Pour into a greased 1 quart casserole. Crush 1/2 cup bread cubes, sprinkle on top and melted butter. Bake uncovered until set in the center. Bake at 350 degrees for 30 to 40 minutes.