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A simple healthy recipe for Roasted Mustard Seed White Fish with Potato-Brussel Sprout Hash, a quick and easysheet-pan dinner that is full of flavor. | #sheetpan #onepan #brusselsprouts #mustard #whitefish #halibut #cod

Roasted Mustard Seed White Fish with Potato-Brussel Sprout Hash

  • Author: Sylvia Fountaine
  • Prep Time: 15
  • Cook Time: 30
  • Total Time: 45 minutes
  • Yield: 2 1x
  • Category: Main
  • Method: Roasted
  • Cuisine: American


A simple tasty Sheet Pan Dinner with Roasted Mustard Seed White Fish over  a Potato Brussel Sprouts hash.


Units Scale
  • 810 ounces potatoes, thinly sliced ( 1/8 inch thick)
  • 1 large shallot, thinly sliced
  • 1 tablespoon olive oil
  • salt and pepper to taste
  • 8 ounces Brussel Sprouts, thinly sliced
  • pinch caraway seeds ( optional)
  • 2 x 6 ounce filets of fish ( or sub chicken breast or tofu)
  • 24 teaspoons whole grain mustard
  • 2 teaspoons olive oil
  • salt and pepper to taste


Pre heat oven to 450F

Slice potatoes and shallots and toss with oil, salt and pepper in a bowl. Place them on a parchment lined baking sheet ( save the bowl) in a single layer and bake 20 minutes.

Slice the brussel sprouts and place in the same oily bowl. Toss, add a pinch of caraway seeds if you want and a little more salt and pepper. Set aside.

Mix the whole grain mustard and oil together in a small bowl and season the fish ( or chicken or tofu) with salt and pepper. Divide the mustard mixture, spooning it over the fish.

After the potatoes have baked 20 minutes, add the brussel sprouts and give them all a little toss. Make a spot for the fish. Bake 10-12 more minutes, until fish is cooked through.

Divide the potato brussel sprout hash among two bowls and top with the mustard glazed fish. Serve with optional sauerkraut.


If substituting chicken or tofu for the fish, place it on the same sheet pan as the potatoes (on the side) . Bake this at 400 for 25 minutes. Add brussel sprouts to the potatoes, tossing. Check the chicken and remove it if it’s  done ( breast will cook faster than thigh) and continue cooking the potatoes and brussel sprouts another another 10 minutes.


  • Serving Size: 1 piece
  • Calories: 318
  • Sugar: 4.1 g
  • Sodium: 386.1 mg
  • Fat: 12.8 g
  • Saturated Fat: 2 g
  • Carbohydrates: 35.9 g
  • Fiber: 7.5 g
  • Protein: 18.6 g
  • Cholesterol: 29 mg

Keywords: Baked white fish with mustard, mustard baked cod, mustard baked white fish,