The crossword solution for the term SLICE (UP) is CUT. The verb 'CUT' means to divide or separate something into two or more parts using a sharp tool such as a knife. It can also mean to reduce or decrease something, such as cutting costs. When used in the context of food, it usually refers to the act of slicing something into smaller pieces. In this case, the phrase 'slice up' implies that the food item is being CUT into smaller pieces.