The term 'SWEET FROZEN TREAT' can be summarized by two crossword solutions: ICEE (4 letters) and OTTERPOP (8 letters). ICEE is a brand of frozen carbonated beverage that was first introduced in 1967. It is available in a variety of flavors and is sold in convenience stores, supermarkets, and movie theaters. OTTERPOP is a brand of frozen fruit-flavored ice pop that was first introduced in the 1970s. It is available in a variety of flavors and is sold in convenience stores, supermarkets, and movie theaters.