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–+ servings
Cheesy Potatoes
Cheesy Potatoes is a rich, comforting casserole that blends tender boiled potatoes with a creamy, savory Gruyère cheese sauce. Perfectly seasoned with a touch of Dijon mustard and nutmeg, the dish balances smooth dairy richness and sharp, nutty cheese. Gruyère adds a sophisticated depth, while a quick broil at the end creates a golden, bubbling topping. Popular as a side dish during holidays or cozy family dinners, it’s a classic example of turning simple pantry ingredients into something luxurious and deeply satisfying.
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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Course Side Dish
Cuisine American
Servings 6
Calories 380 kcal

Ingredients
  

  • 6 potatoes (about 2½ lbs, peeled and cut into ¾" cubes)
  • 3 tbsp butter ( or margarine)
  • ⅓ cup onion (sliced )
  • 3 tbsp all-purpose flour
  • 1 cup milk
  • ½ cup heavy cream
  • 2 tsp Dijon-style mustard
  • ¼ tsp salt
  • ⅛ tsp pepper
  • 1 dash nutmeg
  • 1 cup Gruyère cheese (shredded, divided)

Instructions
 

Step 1: Prepare Potatoes

  • Grease a 1½-quart shallow baking dish and set aside.
  • Cook cubed potatoes in boiling salted water for 7–10 minutes until just tender. Drain well.

Step 2: Make Cheese Sauce

  • Preheat oven to 350°F.
  • In a medium saucepan over medium heat, melt butter.
  • Add onions and cook for 4 minutes, stirring until softened.
  • Add flour and cook for 1 minute, stirring constantly.
  • Gradually whisk in milk and cream.
  • Add mustard, salt, pepper, and nutmeg.
  • Cook while stirring constantly until sauce is thickened.

Step 3: Combine and Bake

  • Remove sauce from heat.
  • Stir in ⅔ cup of the shredded cheese until melted.
  • Add cooked potatoes to the sauce and toss to coat.
  • Spoon mixture into the prepared baking dish.
  • Sprinkle with the remaining ⅓ cup of cheese.

Step 4: Bake and Broil

  • Bake for 20 minutes.
  • Place under broiler for 2 minutes or until lightly browned and bubbly.

Tips

  • Add cooked bacon or ham for a heartier version.
  • Substitute sharp cheddar for Gruyère for a stronger flavor.
  • Mix in chopped green onions or chives before baking.
  • Add paprika or cayenne for a mild kick.
  • Use Yukon Gold potatoes for a creamier texture.
  • Add roasted garlic for deeper flavor.
  • Stir in a handful of spinach or kale for added greens.
  • Swap heavy cream for half-and-half to lighten it slightly.
  • Prepare 1 day ahead and bake just before serving.
  • Top with buttery breadcrumbs for a crunchy finish.

Nutrition

Calories: 380kcalCarbohydrates: 50gProtein: 12gFat: 15gSaturated Fat: 9gPolyunsaturated Fat: 1gMonounsaturated Fat: 4gTrans Fat: 0.02gCholesterol: 46mgSodium: 292mgPotassium: 1018mgFiber: 5gSugar: 8gVitamin A: 552IUVitamin C: 43mgCalcium: 242mgIron: 2mg
Keyword casserole, cheesy, comfort food, creamy, holiday side, potatoes, retro recipes, vintage recipes
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