portion out
Upper Intermediate (B2)neutral
To divide something up into separate amounts and give each person their share.
"The aid workers portioned out the food supplies carefully to ensure everyone received an equal share."
Hear it in context

Inside America’s Best Michelin Star Restaurants | Bon Appétit
Bon Appétit · 91:22
it's really we getting very that tiny portion out of it.

My BIGGEST Advice for Starting & Running Your Art Shop! ✿ Small Business Q&A!
Uncomfy · 6:23
I have to do is thaw it out overnight I'm going to portion out her serving