[header] How to cut fennel [title] Hold the fennel down securely on a cutting board. [step] Rest the fennel on its side on a no-slip cutting board. Hold it steady with your non-dominant hand. 
[substeps] While fennel is not known to be especially slippery, it is still a wise idea to hold it still on a resistant surface to prevent it from slipping away under your grasp. A silicone cutting board works especially well, but a standard wood cutting board can work well, too.