Ingredients for - Haddock Au Gratin

1. Haddock fillets 2 pounds
2. Salt 1 teaspoon
3. Ground black pepper ⅛ teaspoon
4. Butter 3 tablespoons
5. Minced onion ¼ cup
6. All-purpose flour 3 tablespoons
7. Ground dry mustard 1 teaspoon
8. Salt ½ teaspoon
9. Heavy cream ⅔ cup
10. Half-and-half cream ⅔ cup
11. Shredded sharp Cheddar cheese ½ cup
12. Shredded Monterey Jack cheese ½ cup
13. Paprika ¼ teaspoon

How to cook deliciously - Haddock Au Gratin

1 . Stage

Preheat oven to 350 degrees F (175 degrees C). Lightly butter a medium or large baking dish.

2 . Stage

Rinse and dry fillets. Season with 1 teaspoon salt and 1/8 teaspoon pepper.

3 . Stage

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 . Stage

Bake in preheated oven for 30 minutes, until brown and bubbly.