Perennial: I grow asparagus (I have 50+ crowns). I eat it almost every day for months starting in May and I also pickle it. I can also make asparagus soup or have it with eggs or on buttered toast. Love it. I have a friend who froze some that I gave her, and then used it in a quiche. She brought me a piece and I wasn't able to tell that it wasn't fresh, so that was a good thing to realize. She said that she didn't even blanch it. I will definitely try that.
I grow basil like a crop. I think I have about 15-20 plants which allowed me to have all that I could possibly use, and be able to give bags full to many, many people. I make batches of pesto and freeze it in cup amounts which is perfect for a box of pasta or stirred into a pot of rice. You can add tomatoes, chicken, whatever. I pick enough of the leaves to make two to six batches at once and use one and freeze five or however many are left. Because I'm out of freezer space, I have a pile of leaves in the dehydrator and can use them throughout the winter without taking up much space at all. While it's not a perennial, it is a work horse that doesn't take up much space at all. I started the seeds indoors and then planted them out when it was warm enough. I've made pesto with parsley, as well. There are all sorts of pesto recipes, and having it made and in the freezer makes meals pretty instant!
🌿 WINTER BASIL (FOR PESTO)
o 3/4 cup dried/dehydrated Basil
o 1/2 cup Walnuts (Toast first!)
o 1/2 tsp Garlic Granules or 3-4 cloves
o 1/2 cup EVOO + 1/2 cup Water
o 1/2 tsp Salt + Pepper
o Optional: 1 tsp Lemon Juice (at the end for brightness)
I don't know if you can at all, but I have a peach tree that provided me with so much fruit. (My friends are all very happy!) Along with canning straight 40 quarts of peaches, I also make a lot of Peach Salsa. I use it as a side dish usually, but, again, with rice, it could be a substantial part of a meal. Salsa can be made with many different fruits and vegetables...tomato being the most common. A meal can be as simple as salsa mixed with cottage cheese or with eggs...all sorts of possibilities.
I also grow wine cap mushrooms, which is a very Permie thing to do! They have two large flushes a year: spring and fall. I end up sauteing them, letting them cool and then popping them in the freezer. I saute them first because they release a lot of water and it brings the sheer quantity down to a reasonable amount of space. I also freeze-dry them, but not everyone has a freeze-dryer. Mushrooms are a no fuss thing to grow. In the fall I "feed" them leaves that have fallen on the lawn. They digest them, so it's a pretty neat cycle. Mushrooms on toast, mixed in with pasta, cream of mushroom soup, stuffed...so many options again.
I hope some of these ideas help.