Nothing says fall is here like beautiful (or slightly funky, in the case of celeriac) root vegetables and chilly weather that invites turning on the oven to roast said veggies.
This recipe started with a desire to make a creamy soup based on celeriac (AKA celery root). Celeriac is a rather humble vegetable.
Beneath the dirt and gnarly exterior is some good stuff. (We sell a lot of our celeriac to Five Bistro; it’s on the menu now, in fact!)
You can always chop up veggies, boil, and puree them, but basing the soup on roasted veg really amps up the flavor. I discovered that starting with a covered dish for the first twenty minutes of roasting, followed by spreading the vegetables in a single layer on a baking sheet and roasting for an additional 30-40 minutes, worked really well for both celeriac and carrots.
I used a fairly generous amount of oil for roasting and generous butter for sauteing the leeks. This approach yielded a rich, creamy soup without actually requiring cream.
CREAMY CELERIAC SOUP
Recipe by Melissa
2-3 celeriac, depending on size
8 carrots (you won’t use all of these in the soup, but you won’t regret having extra roasted carrots, trust me!)
1 large leek
4-5 small potatoes (or equivalent larger)
1 bay leaf
butter and/or olive oil
salt & pepper
Preheat the oven to 425° F. Prep the celeriac by cutting off the tough outer layer, then cutting into large chunks. In a large, lidded Pyrex baking dish, toss the celeriac chunks with olive oil and salt. Bake in covered dish (use a baking sheet set on top of the pan or aluminum foil if you don’t have a lidded dish) for about 20 minutes.
Prep the carrots by cutting into carrot sticks. Wash and chop the leeks.
Once the celeriac has roasted in the covered baking dish for 20 minutes, use a slotted spoon to transfer to an oiled baking sheet (minus any accumulated liquid in the pan). Roast on the baking sheet, uncovered, for 30-40 more minutes, stirring once.
In the same baking dish you used for the celeriac, toss the carrots with some olive oil, cover, and roast for 20 minutes. After 20 minutes, follow same procedure for transferring to a baking sheet and roasting, uncovered, for an additional 30 minutes.
Chop the potatoes (large chunks), and cook with a bay leaf and 5-6 cups of water, and 1 t. salt.
Saute the leeks in butter, over low heat.
Once your celeriac and carrots are roasted, potatoes are boiled, and leeks are sauteed, you’re ready to blend. For this soup, I pureed all of the potatoes, most of the celeriac (reserved some to chop smaller and add to the soup as chunks), most of the leeks (again, reserved some to garnish the soup), and about 1/4 of the total carrots I roasted. Use the cooking water from the potatoes as your broth (just remember to remove the bay leaf before pureeing!).
Working in batches, blend until you have a nice, smooth, creamy soup. Add more or less of the broth (or additional water) to reach a consistency of your liking. Salt and pepper to taste, and add the reserved leeks and celeriac chunks.
We rounded out the meal with a side of greens and [whole wheat] bread spread with roasted garlic. Oh, and some of the extra roasted carrots!