2 (7 oz.) cans tuna
1 c. cheese, grated
1 med. onion, grated
1 c. mayonnaise
3 eggs
1/4 c. milk
1 deep dish pie crust

Mix tuna, cheese and onions together. Mix milk, mayonnaise and eggs together to make a sauce. Pour into tuna mixture. Stir together. Pour into pie crust. Cook 350 degrees for 50 minutes or until brown.