Haddock Au Gratin

13 ingredients
4 steps

Ingredients

  • 2 pounds haddock fillets
  • 1 teaspoon salt
  • 1/8 teaspoon ground black pepper
  • 3 tablespoons butter
  • 1/4 cup minced onion
  • 3 tablespoons all-purpose flour
  • 1 teaspoon ground dry mustard
  • 1/2 teaspoon salt
  • 2/3 cup heavy cream
  • 2/3 cup half-and-half cream
  • 1/2 cup shredded sharp Cheddar cheese
  • 1/2 cup shredded Monterey Jack cheese
  • 1/4 teaspoon paprika

Directions

  1. 1
    Preheat oven to 350 degrees F (175 degrees C). Lightly butter a medium or large baking dish.
  2. 2
    Rinse and dry fillets. Season with 1 teaspoon salt and 1/8 teaspoon pepper.
  3. 3
    In a skillet or frying pan, melt butter over medium heat. Saute onion in butter until golden. Stir in flour until completely incorporated. Stir in mustard, 1/2 teaspoon salt, light and heavy creams. Cook until thickened, stirring constantly. Remove from heat and stir in cheeses. Pour sauce over fish and sprinkle with paprika.
  4. 4
    Bake in preheated oven for 30 minutes, until brown and bubbly.

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