veg pasta sauce recipe for fussy husband

If you find a suitable sauce, make a huge batch of it and freeze in one portion sizes. Only one lot of washing up!

There is of course the option of getting him to cook it - or even to just do the washing up!!!

Roast the veg he will eat, I am with him on Mushrooms, devils food, liquidise them not too smooth, add fresh herbs and seasoning.
Freezes easily I make it to keep for Vegan friends in portions, adding the fresh herbs after it has been de-frosted and heated. Could be served over a nice piece of fish.
Dried herbs during cooking, fresh when serving, fresh herbs loose all flavour during cooking, except Tarragon, Rosemary and Bay.

The obvious is puttanesca, usually with spaghetti - various recipes, so you can just omit the tomatoes.

Does fussy husband ever cook?

Pesto sauce is made with basil/pine nuts/garlic/olive oil/lemon juice? You could add vegs that he will eat as well. Would go with fish.

Point him towards the internet, loads of recipes I’m sure, then the kitchen.
Get yourself a takeaway

Is suggesting he cooks his own dinner a possible option? He might become less fussy and widen his options then ?