I forgot who was asking about spreads/sandwich fillers but this is what I make:
- chickpea mayo (like egg mayo) - cook your own chickpeas or use tinned ones, you don't want to blend them so they're mushy but rather have chunks so it's better to squash them with the back of a fork or potato masher. Add mayonnaise until you reach desired consistency. Season with salt an pepper, can also add a bit turmeric for flavour and deeper yellow colour, paprika/smoked paprika, chopped chives or salad onion (green onion). I like to sprinkle mine with Nigella seeds but I do it when I make the sandwich rather than in advance (I just am not sure how Nigella seeds behave in something like this, I worry they'd overpower it or stain it black), or salad cress (so you have like an egg and cress sandwich).
You can also add a bit of the "black salt". It gives it an eggy taste. I personally cannot stand it but my two vegan besties love it.
- tofu "cottage cheese" - blend one block of plain, "natural", firm tofu with 2 tablespoons of lemon juice, 2 tablespoons of plant milk of choice, 2 tablespoons of mild oil (I like sunflower but a mild olive oil works too), season with salt and pepper. Can also add a spoonful of sauerkraut juice if you ever buy sauerkraut. It just adds extra acidity and takes away the "bean-y" taste tofu sometimes has. Add chopped chives/green onion or favourite herbs. I like dill and parsley, either on their own or mixed. When I say blend, I actually mean pulse - so there is texture in it, like it would be in a cottage cheese. You might also want to press the tofu before blending/pulsing. The one I buy, doesn't really require that step but it's worth noting that some of them do.
- smoked tofu spread - it's honestly like a smoked fish pate. 1x block of smoked tofu, blend with 1-2 tablespoons of mayo, couple of teaspoons of mild oil, a teaspoon of lemon juice or apple vinegar, a teaspoon of mustard (Dijon is nice here but anything aside from wholegrain will do), a teaspoon of soy sauce. You can add a sheet of nori seaweed for extra sea/"fishy" flavour. Season with salt and pepper.
This one is lovely on a crusty baguette or fresh bread. It's good to keep this one in the fridge overnight for the flavours can combine.
The same recipe works for flavoured tofus - I buy a lot of the Taifun Tofu and there is a basil one, there are those wild garlic "filets", there is a Mediterranean one called "Rosso" with tomatoes and olives, and they all work in the above recipe. You might want to add onions if you use a flavoured tofu instead of smoked. Chop very finely 1 shallot of half a small onion. You might want to marinate the chopped onions in a little lemon juice or apple cider vinegar to take the edge off (so it doesn't taste like a completely raw onion, if that makes sense).
I know these are a bit extra but I just love cooking and cook from scratch a lot and love adding lots of interesting toppings to my food. Feel free to ask questions. Also you don't have to be super precise as to how much lemon juice/mayo/soy sauce etc to use - just add a little at a time, mix it in, taste, and add more if needed.