Make roasted celery root “chips.” Slice the root in half and then into quarters; then slice each quarter as thinly as possible. (A santoku knife is great for this). Toss the pieces in enough olive oil to coat, sprinkle with salt, spread on a heavy-duty sheet pan; and roast at 350°F until they are mostly a deep golden brown, with some white left. (I think the darker ones are crispier, but too dark and they’ll taste bitter.) Let them cool on the sheet pan to finish crisping up. Sprinkle with more salt and snack on them.
Slice celery root into thin matchsticks (or grate it coarsely) and toss it (raw) into a winter salad of endive, sliced pears, toasted walnuts, and blue cheese.
Celery root is also a good flavor match with seafood. A bed of celery root puree for a sear-roasted fish filet is delicious. Cut the root (and a few small potatoes) into pieces and simmer them with a few small garlic cloves until tender. Puree the vegetables with a little of the cooking liquid, a bit of cream, and salt and pepper.
Make a celery root “galette” by lining a tart pan with a couple layers of thinly sliced circles of celery root and gruyere cheese. Bake at 400°F until browned and tender. (Cover for the first half of cooking.) Let cool and slice into wedges.
Since celery root and potatoes are such a great match, use them together in a hearty winter soup. Sauté lots of sliced leeks in butter, add cubed celery root, potatoes, and chicken or vegetable broth, simmer until tender, puree, and enhance with a touch of cream, a little lemon zest, lots of chopped fresh parsley and crispy croutons.
Apples and celery root are also happy partners. Use them raw together in a salad, or try roasting them first and adding them to a warm escarole salad with crispy strips of ham and a warm Dijon vinaigrette.