The term 'Dessert for a Dieter' can be solved by two crossword solutions: MELON (5 letters) and PEAR (4 letters). MELON is a type of fruit that is usually round and has a hard, green rind. It is often eaten as a snack or dessert and is high in vitamins and minerals. PEAR is another type of fruit that is usually elongated and has a yellow or green skin. It is also a popular snack or dessert and is low in calories and fat. Both MELON and PEAR are great options for those looking for a healthy dessert while on a diet.