My favourite porridge oats is Flavahan's multi seed porridge, but it is about two or three times the price of the unseeded oats. I have therefore bought a small pack of sunflower, golden linseeds and pumpkin seeds, which saves a considerable amount. I won't bore you with the numbers.
Would you add the relevant percentage of nuts to the oats (in a large container) or add a tablespoon or thereabouts to each bowl each day?
Blindfold yourself each morning then add some, result instant porridge surprise each morning