Before you put a turkey sandwich in the freezer to save for later, consider its ingredients! Certain turkey sandwich toppings do not freeze well, including ricotta, cottage cheese, and cream cheese. Hard cheeses, including cheddar and parmesan, may be frozen for six months. As long as your turkey sandwich doesn't include high-moisture ingredients that don't freeze well, such as lettuce or mayonnaise, your turkey and cheese sandwich is ok to freeze.