
Recipe information
Yield
4 Servings
Ingredients
1
1
4
6
4
8
2
2
1
1
Need to make a substitution?
Preparation
Step 1
Place racks in upper and lower thirds of oven; preheat to 450°. Toss potatoes, fennel, and shallots with 1 tablespoon oil on a large rimmed baking sheet; season with salt and pepper and arrange vegetables cut side down. Roast on lower rack of oven until beginning to brown, about 20 minutes.
Step 2
Meanwhile, place trout skin side down on a parchment paper-lined large rimmed baking sheet. Rub with 1 tablespoon oil and season with salt and pepper.
Step 3
When vegetables have roasted 20 minutes, place fish in oven on upper rack. Toss vegetables on a baking sheet and continue to roast along with fish until vegetables are tender and fish is just opaque in the center, 8-10 minutes longer.
Step 4
Whisk horseradish, vinegar, and mustard in a medium bowl. Gradually whisk in remaining 4 tablespoons oil and season vinaigrette with salt and pepper.
Step 5
Drizzle some of vinaigrette over vegetables, add parsley, and toss to combine. Serve trout with vegetables, passing remaining vinaigrette alongside.