Roasted Celeriac Steaks with Mushrooms and Sweet Potato Mash Recipe

Ingredients

• 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