There are lots of recipes
online for ground "meat" using walnuts. I may have tried one waaaaay back 20 years ago when I was first trying out veganism, but I don't remember anything about it. Look up a few to get the gist, then use whatever nuts you have.
Back when I had an
oven, I made nut loaf for my (omnivore) husband quite a bit. Most of the recipes don't actually have all that many nuts in them, so I already put extra. I made a lentil based one with lots of sunflower seeds and walnuts, chopped up fine. Shelling walnuts is time consuming, so I often replace some of them with sunflower seeds, which I always have. Nuts work really well for texture and fat in that type of recipe.
I actually like a small amount of buckwheat in vegan chili for texture. I think it's probably too soft to actually mimic meat, but it's a nice texture anyway.