Apricot filling is a thick, jam-like paste made by cooking apricot pulp or dried apricots with sugar, often with a gelling agent such as pectin, a fruit acid and a little starch. Unlike a table jam, a bakery filling is made to be bake-stable: it has to hold its shape and not boil out or run when the dough around it goes into the oven.
Apricots give a golden-orange colour and a sweet-tart, slightly floral taste that pairs well with buttery dough. That is why apricot is a classic filling for European-style cookies, tarts and pastries.
On SeekSnack, apricot filling is one of the fruit centres in Denma filled cookie with fruits, alongside strawberry and prune fillings.

