“I’m so enjoying this!”

The answer to the crossword puzzle is “WHATATREAT.” This phrase is often used to express extreme enjoyment or pleasure in something, hence the clue “I’m so enjoying this!” The word “treat” refers to something that is enjoyable or pleasurable, such as a dessert, activity, or experience. By combining “what a” with “treat,” the phrase “WHATATREAT” emphasizes the excitement and joy felt in experiencing something enjoyable.