Favorite Jeans, I truly love that question, it's thought-provoking and I can really relate. I don't have much lasagna community these days. I founded a playgroup when my daughter was young, but after 2-3 years, I supported the father of one of the families in a custody dispute and got alienated from my core group who came out on the other side of the debate. That was a hard loss.
I do count myself lucky, very lucky, that my mother-in-law moved up to live near us about 11 years ago- when I gave birth, she filled my freezer, and it really was touching. I'll never forget that, especially being estranged from my own mother. And when she and my FiL have needed it, I'm certainly there for them too with lasagna.
When I worked at a business, I think I could have counted on a bit more support, but my coworkers now are all online, as I work from home and so I do have a friend who sends things via amazon, and the group sent me a lovely gift in the summer when I graduated college.
I also have a neighbor I can count on in an emergency, the type whose mail I pick up when she's out of town.
So, I have something, but I don't have a church group (that is a definite source of built in community for those who are religious and attend in my experience) or other support system in person.
I have been working a bit on cultivating one.
I chat with my new next door neighbor, but stop short of inviting them for dinner. I am also a little wary of getting too close, i.e. entangled with them in case our personalities don't suit each other.
I've dipped my toes into meetup and craigslist as well.
I think when I start volunteering again, I'll connect more with a lasagna crowd. Here's hoping. It's a lovely, lovely thing to have.
Good luck to you developing this- it's definitely never too late- our needs do shift over time- I too have had more introverted periods, but it doesn't mean we can't adjust to create what we want later.
I do think therapy has been so compelling that I've used time I could have used to socialize a bit more, but I think that's been necessary, and that having done the work I need has also encouraged me to be closer to those I am near and reach out a bit more, so I think it waxes and wanes and don't think there's anything wrong with that.