Add dates and oats to a food processor, and process until they break down well. You can know if the mixture is sticky enough by squeezing it between your hands – it should stick well together.
Line the bottom of a small (about 8 inch wide, or 20 cm) round spring-form pan with saran wrap (it will make it easier to take out the cake).
Press the crust into the bottom of the pan.
Spil frozen cherries on the crust, and set aside while you make the filling.