Keto fish casserole with mushrooms and French mustard

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Keto fish casserole with mushrooms and French mustard

1 hour
Calories 80kcal


  • 1 pound mushrooms
  • 3 ounces butter
  • 1 teaspoon salt
  • pepper (to taste)
  • 2 tablespoons fresh parsley
  • 2 cups heavy whipping cream
  • 2 tablespoons dijon mustard
  • 8 ounces shredded cheese
  • 1 1/2 pounds whitefish (to taste)
  • 3 2/3 pounds broccoli (to taste)
  • 3 ounces butter oil


  • Preheat the oven to 350°F (175°C). Cut the mushrooms into wedges.
  • Fry in butter until the mushrooms have softened, about 5 minutes.
  • Add salt, pepper, and parsley.
  • Pour in the heavy cream and mustard and lower the heat.
  • Let simmer for 5-10 minutes to reduce the sauce a bit. Season the fish with salt and pepper and place in a greased baking dish.
  • Sprinkle 3/4 of the cheese on and pour the creamed mushrooms on top.
  • Top with the remaining cheese. Bake for about 30 minutes if the fish is frozen, or slightly less if it’s fresh.
  • Probe with a sharp knife after 20 minutes; the fish is done if it flakes easily with a fork.
  • And remember that the fish will continue to cook even after you have taken it out of the oven. Meanwhile, make the side dish.
  • Cut the broccoli or cauliflower into florets.
  • Boil in lightly salted water for a few minutes.
  • Strain off the water and add olive oil or butter. Mash coarsely with a wooden spoon or fork. Season with salt and pepper and serve with the fish.


Calories: 80kcal

Originally posted 2019-02-20 18:22:04.

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