Wash the apricots very thoroughly. Bring water to a boil and blanch the fruits for 2 min.
Take them out, cool briefly and peel the outer skin of the fruits because it contains allergens (the same goes for peaches). Remove the pits as well.
Mash the fruits and season with powdered sugar if desired. If you don't think it's thick enough, mix the puree with a little rice flour diluted in water, while it's still warm.