This meal brought me back to my childhood when I used to love pasta salad with rich creamy mayonnaise. It´s really quick to put together when you use some convenient ingredients such as tofu mayo and already fried and seasoned packaged tempeh. But you can definitely make your own tofu mayo (there are plenty of recipes on the webs) or season and fry plain tempeh according to your wishes.
I cooked some corn pasta al dente. On a pan I sauteed onion on olive oil for a couple of minutes. Then I chopped up leek, celery (stalk plus leaves) and tempeh and I grated carrot and celery root on the coarse side of the grate. Afterwards I added all these veggies to the onions, sauteeing until soft and shiny. You can season them with fresh cracked black pepper. Mix the veggies and the pasta and add as much tofu mayonnaise as you like, mix well, voila!