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Salmon Casserole Surprise

Salmon Casserole Surprise layers tender potatoes and flaky salmon with a rich, velvety white sauce, then finishes with a tangy Parmesan-mayo topping that bakes to a golden, bubbly crust. It’s savory, comforting, and perfect for chilly evenings or a nostalgic family supper, with subtle Worcestershire and mustard notes lifting the flavor.

  • Prep15 mins
  • Cook45 mins
  • Serves6
  • DifficultyEasy
Salmon Casserole Surprise
  1. 1

    Put the potatoes in a large pot, cover them with salted water, and bring to a boil. Lower the heat to medium-low and simmer until tender, 10 to 15 minutes. Drain.

  2. 2

    Combine the reserved liquid from the salmon with enough milk to make a total of 2 cups in a measuring cup or bowl.

  3. 3

    Set the oven to 375 degrees F (190 degrees C). Generously grease a casserole dish.

  4. 4

    Melt the butter in a saucepan over medium-low heat. Stir the flour into the melted butter and cook until dissolved, about 1 minute. Gradually add the milk mixture to the butter-flour mixture; cook, stirring constantly, until the sauce is thickened and smooth, 5 to 10 minutes.

  5. 5

    Layer the potatoes, salmon, and sauce in the prepared casserole dish, alternating 1 or 2 times.

  6. 6

    Whisk the mayonnaise, Parmesan cheese, Worcestershire sauce, and mustard together in a bowl; pour over the casserole.

  7. 7

    Bake in the preheated oven until the casserole is bubbling, about 30 minutes.