Some great advice on here and really good posts!
I wonder if your DH finds you 'set in your ways' as well but has never said? Now he is retired he could be tackling some household tasks - perhaps he could develop an interest in cooking as another poster suggested?
Like a couple of others, I belong to TWG, not only does our group hold monthly meetings with a speaker, they organise coffee mornings, walks, charity functions and outings to the theatre and day trips.
DH was so busy with his work (and worked away during the week) that he was not really part of the community where we live; I encouraged him to volunteer for various things and at one time he became so busy I hardly saw him after he retired. He is doing less now, but plenty to keep him interested.
One thing we did do together was join the National Trust, and have enjoyed some lovely visits. Having exhausted most of the places nearby we now think we might go away for a couple of days at a time and explore further afield. I think it is important to do something together even if you have your own interests to keep you busy - a shared interest will give you something to chat about, perhaps National Trust gardens you have visited. A thought for next year, as many places close for the winter months.
Do you have any female friends you could go out with? If not, then joining TWG, U3A, yoga or a craft or knitting group could help you to meet other women with similar interests. You could even become a 'lady who lunches' (occasionally!).