If you set the date on a cutting board, hold the sides when you cut it. If you hold the date in your hand, be especially careful that you don’t cut yourself.
Toss the pit in the trash or place all of the pits in a pile to dispose of later on.
To work against the stickiness of the fruit, it also works to cut the dates with a pair of scissors instead of a knife.
If the pieces still aren’t small enough, cut them all into smaller pieces so they are the size you want them to be.
If you don’t mind the dates ending up in a single sticky ball, it’s not necessary to process the oatmeal first.