Creamy Roasted Kohlrabi White Bean

My farmers market haul one rainy October morning included two enormous kohlrabi bulbs with their greens still attached, and the vendor practically begged me to take them off his hands since most people toss the leaves anyway.

I served this to my neighbor Sarah after she helped me assemble bookshelves for three hours, and she sat in my kitchen silently eating two bowls before saying a single word.

Ingredients

• Kohlrabi greens: Two large bunches with stems removed, these are the star of the dish so grab the freshest bunches you can find.
• Yellow onion, carrots, celery, and garlic: The classic aromatic base that builds the foundation of flavor for the entire soup.
• Yukon Gold potato: One medium potato adds just enough starch to make everything creamy without needing heavy cream.
• White beans: Cannellini or great northern beans provide protein and contribute to the silky texture when blended.
• Vegetable broth: Four cups of good quality broth make all the difference, so taste yours beforehand and adjust salt accordingly.
• Plant-based milk: Unsweetened oat or cashew milk keeps this vegan, but regular dairy milk works beautifully too.
• Olive oil, lemon juice, thyme, smoked paprika, salt, and pepper: These seasonings work together to give the soup a subtle smokiness that balances the earthy greens.
• Optional garnishes: Fresh parsley, croutons, and a drizzle of olive oil or vegan cream add a lovely finishing touch.

Instructions

Roast the greens:

Preheat your oven to 400 degrees and toss the chopped kohlrabi greens with one tablespoon of olive oil and a generous pinch of salt. Spread them on a baking sheet in a single layer and roast for about 12 to 15 minutes until the edges get slightly crisp and the leaves have wilted, stirring once halfway through.

Build the base:

While the greens work their magic in the oven, heat the remaining olive oil in a large soup pot over medium heat and sauté the onion, carrot, and celery for 5 to 7 minutes until everything is soft and fragrant. Toss in the garlic and stir for just one more minute until you can really smell it.

Combine everything:

Add the diced potato, the roasted kohlrabi greens, the white beans, thyme, smoked paprika, salt, and pepper to the pot, then pour in all the vegetable broth. Give it a good stir to combine and bring it to a rolling boil.

Simmer until tender:

Reduce the heat to a gentle simmer and let the soup cook uncovered for about 20 minutes, just until the potato pieces are fork tender and everything has melded together.

Blend to your liking:

Take the pot off the heat and use an immersion blender to purée until mostly smooth, leaving some chunks for texture if that appeals to you. If using a regular blender, work in careful batches and never fill it more than halfway with hot liquid.

Finish and serve:

Stir in the plant-based milk and lemon juice, then warm everything gently over low heat while tasting for salt and pepper. Ladle into bowls and finish with whatever garnishes make you happy.

Save

That evening with Sarah turned into a standing soup night tradition that has lasted through two winters now, and this kohlrabi greens recipe always makes an appearance.

What If You Cannot Find Kohlrabi Greens

If your market does not carry kohlrabi with the greens attached, curly kale or mature spinach are your best substitutes and both roast surprisingly well.

Making It Extra Creamy

For a richer texture, swap the plant milk for homemade cashew cream by blending a half cup of soaked raw cashews with a half cup of water until perfectly smooth.

Tools You Will Want Handy

You really only need a baking sheet, a large soup pot, and either an immersion blender or a countertop blender to pull this together. Keep a good chef knife and cutting board nearby for all the chopping.

• An immersion blender saves you the hassle of transferring hot soup in batches.
• Lining the baking sheet with parchment makes cleanup almost nonexistent.
• Taste and adjust salt right before serving because the flavor shifts as it cools slightly.

Save

Some soups are just dinner, but this one feels like an invitation to slow down and appreciate the parts of vegetables we usually throw away.

Recipe Questions & Answers

→ Can I use kohlrabi bulbs instead of just the greens?

Absolutely. Peel and dice the kohlrabi bulbs along with the potatoes. They'll add mild sweetness and extra body to the soup. Add them during step 3 with the potatoes.

→ What's the best way to achieve the creamiest texture?

Using an immersion blender creates a smooth consistency while retaining some texture. For ultra-creamy results, blend completely then stir in cashew cream instead of plant milk during the final step.

→ Can I make this soup ahead of time?

Yes. This soup actually improves after resting. Prepare up to 3 days ahead and refrigerate. Reheat gently over low heat, adding a splash of broth or milk if needed to adjust consistency.

→ What greens work best as substitutes for kohlrabi greens?

Kale, collard greens, or Swiss chard work wonderfully. Adjust roasting time slightly—kale and chard need less time while collards benefit from an extra 2-3 minutes in the oven.

→ Is this soup freezer-friendly?

Yes. Cool completely before transferring to airtight containers. Freeze for up to 3 months. Thaw overnight in the refrigerator, then reheat gently. The texture may be slightly thinner after freezing.