Combine the celery root, fennel, apple, and lemon juice in a large bowl, and season with salt and pepper.
Toss the ingredients together, and set aside for at least 30 minutes but no longer than 2 hours. This will tenderize and marinate the vegetables, and also prevent them from turning brown.
Combine the mayonnaise, sour cream, vinegar, honey, and mustard in a small bowl. Season with salt and pepper.
Pour the dressing over the vegetables and toss well.
Fold in the dried cranberries.
Taste, and season with salt and pepper if needed. Enjoy!
Place all of the vegetables in a large mixing bowl. Season with garlic, salt, black pepper, allspice, and chili flakes. Drizzle with olive oil. Toss the mixture thoroughly to combine.
Line a sheet pan with foil.
Turn seasoned vegetable mixture on to sheet pan. Spread the vegetables out on the pan.
Place pan in oven. Roast for 7 minutes. Remove from oven.
Roast Fish
Cut fish fillets into 2 inch pieces.
Season fish pieces with salt and black pepper.
Place the fish pieces on top of the vegetables.
Return fish and vegetables to the oven. Roast for 8 minutes.