Roasted Celeriac Steaks with Mushrooms and Sweet Potato Mash

  • Prep-time: / Ready In:
  • Makes 8 steaks + 3 cups mash + toppings
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Sink your teeth into this hearty meal featuring tender celeriac steaks, a creamy sweet potato mash, and a homemade steak sauce that will leave you licking your fingers. Celeriac—the root of a celery plant—delivers a nutty, slightly sweet flavor and softens to a scrumptious meaty texture when cooked. Cannellini beans are mashed into the sweet potato mixture to produce an extra decadent (and nutrient-dense) base for the steaks, while sautéed mushrooms make for an earthy, umami-rich topping. In addition to all that deliciousness, the element that really takes this dish over the top is the savory-sweet sauce that comes together in just 10 minutes. Save any extras you don’t use to drizzle over roasted veggies, lentil meatloaf, or baked tempeh.

To learn how to make impressive steaks from cauliflower, squash, and more, check out our guide: How to Make Veggie Steaks. And for more hearty vegan meals, check out these tasty ideas:

By Ellen Boeke,


  • 2 celeriac roots (3 lb. total), peeled and cut into eight to ten 1-inch-thick slices (steaks)
  • 3 to 4 tablespoons sherry vinegar
  • Sea salt, to taste
  • Freshly ground black pepper, to taste
  • 4 cups sliced fresh mushrooms (cremini, button, shiitake, and/or oyster)
  • 1 lb. sweet potatoes, peeled and cut into 2-inch pieces
  • 1½ cups low-sodium vegetable broth
  • 7 cloves garlic
  • 1 15-oz. can no-salt-added cannellini beans, rinsed and drained (1½ cups)
  • 1 teaspoon chopped fresh thyme
  • 3 tablespoons finely chopped toasted walnuts (optional)
  • 6-oz. can no-salt- added tomato paste
  • ¼ cup packed brown sugar
  • ¼ cup balsamic vinegar
  • 2 tablespoons reduced-sodium soy sauce
  • 3 cloves garlic, minced
  • 1 teaspoon smoked paprika
  • ½ teaspoon freshly ground black pepper
  • Chopped fresh flat-leaf parsley
  • 4 slices crusty whole grain bread


  • Preheat oven to 400°F. Line a baking sheet with parchment paper. Arrange steaks on baking sheet. Brush with 2 tablespoons of the sherry vinegar and season with salt and pepper. Roast 45 minutes or until tender, turning once.
  • Meanwhile, in an extra-large nonstick skillet, cook mushrooms over medium-high 8 minutes or until tender and lightly golden, stirring occasionally and adding water, 1 to 2 tablespoons at a time, as needed to prevent sticking. Season with salt and pepper.
  • Smash 4 cloves of the garlic. In a medium saucepan combine sweet potatoes, broth, and smashed garlic. Bring to boiling over medium-high; reduce heat. Cover and simmer 20 minutes or until tender. Drain, reserving liquid. Add beans and 1 to 2 tablespoons of the remaining vinegar to the mixture. Mash beans and potatoes to desired texture, adding enough of the cooking liquid to reach desired consistency. Stir in thyme. Season with salt and pepper. If you like, sprinkle with walnuts.
  • For Veggie Steak Sauce, mince remaining garlic. In a small saucepan whisk together tomato paste, brown sugar, balsamic vinegar, soy sauce, garlic, smoked paprika, ¼ cup water, and ½ teaspoon black pepper. Bring to a simmer over medium; simmer 10 minutes to blend flavors.
  • Serve celeriac steaks over sweet potato mash. Top with mushrooms and drizzle with Veggie Steak Sauce. Sprinkle with parsley and serve with bread.

Comments (3)

(5 from 2 votes)

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Unbelievable! If you make this your taste buds are in for a treat! How come there are only 5 stars? This deserves to be rated at 15 minimum! YUM Thank you so much! I rate recipes as: • Never again • Needs Work • Good • Almost there • Company good ( not afraid to make it for company! This is better than COMPANY GOOD! A FEW TIPS. 1. When selecting the CELERIAC root, don't get ones with lots of roots at the bottom, get the smoother ones. The roots hold lots of dirt and you pay for the twisted riots at the bottom but can't use them. 2. Make sure the roots are completely peeled. While the skin on the root is edible, it's like chewing on cellophane paper, meaning, it's really tough. 3. The "Veggie Steak Sauce" is almost like a bar-b-que sauce, only better. Next time I'll double the recipe but keep the brown sugar at the recipe for 1 and, I'll make it just a bit more fluid. I'll also use Tamari instead of bug-juice .. er I mean Soy-sauce. I'm trying to figure out a replacement for the brown sugar... I wish a comprehensive nutritional listing was included!

Carol A McCollum

Wondering if celeriac steaks could be replaced with cauliflower steaks? Would the flavors of cabbage be good with the sweet potato/bean mash?

Courtney Davison

Hi Carol, Yes, cauliflower steaks would make a great substitute for the celeriac steaks here! They should take about the same amount of time to roast. You can find more information about making cauliflower steaks and other veggie steaks here: Thank you, Courtney Editor, Forks Over Knives

About the Author

Ellen Boeke headshot

About the Author

Ellen Boeke

Ellen Boeke has more than 25 years of experience as a recipe developer and food editor. She holds Bachelor's of Science degrees in consumer food science and journalism from Iowa State University and attended Le Cordon Bleu in Paris, France. Find her on LinkedIn.
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