I sometimes do a pasta salad.

Cook, drain and cool the pasta (sometimes I add some cooked onion here). Add some chopped salad ingredients (cucumber, tomato, gherkin, sundried toms, sultanas, salad onion if you don't cook onion, celery, baby spinach leaves, pine nuts, olives, pineapple, chopped herbs or whatever you like) plus a tin of tuna and a tbs of mayo and a tsp of wholegrain mayo. Stir.

You can experiment with quantities and different ingredients too, depending on what you like and what fits your DH's diet. I've also done it without the tuna.

HTH