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alfredo potatoes in a casserole dish
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5 from 1 votes

Alfredo Potatoes

Alfredo Potatoes are a rich and creamy potato side dish made with roasted potatoes and a homemade Parmesan Alfredo sauce. A perfect option for feeding a crowd, this easy casserole is a comforting alternative to mashed potatoes and pairs well with any meal.
Prep Time20 minutes
Cook Time1 hour
Course: Casseroles, seasonal, Side Dishes
Cuisine: American
Keyword: casserole, cheese, parmesan, potatoes, side dish, thanksgiving, viral
Servings: 8 people
Calories: 358kcal
Author: Trisha Haas - Salty Side Dish

Equipment

Ingredients

  • 4 lbs. Russet Potatoes cut into 1-inch chunks, skin left on
  • 3 tbsp. butter melted
  • salt to taste
  • black pepper to taste
  • 1 cup grated Parmesan Cheese
  • Chopped fresh parsley (optional for serving)

Alfredo

  • 4 tbsp. butter
  • ¼ cup minced garlic
  • 2 cups heavy whipping cream
  • ½ cup grated Parmesan cheese
  • ½ tsp. salt
  • ¼ tsp. ground black pepper
  • dash ground nutmeg

Instructions

Prepare the Potatoes

  • Place potatoes in a large stockpot and cover with cold water (about 2 inches above the potatoes).
  • Bring to a boil over high heat and cook until tender but not falling apart. Drain well.

Roast the Potatoes

  • Preheat oven to 400°F (220°C).
  • Toss drained potatoes with 3 tbsp. melted butter. Spread evenly on a parchment-lined baking sheet. Season with salt and pepper.
  • Roast for 30–40 minutes, flipping every 10 minutes, until browned and crispy. If desired, increase oven to 425°F during the last 20 minutes for extra crispness. Monitor closely to prevent overcooking.
  • Transfer roasted potatoes to a 9x13-inch baking pan and sprinkle with 1 cup Parmesan cheese. Set aside.

Make the Alfredo Sauce

  • In a skillet, melt 4 tbsp. butter over medium heat. Add garlic, cream, Parmesan, salt, pepper, and nutmeg. Cook, stirring often, until sauce begins to boil. Simmer 1 minute, then remove from heat.
  • Pour Alfredo sauce over the potatoes in the baking pan.
  • Bake at 400°F for 20 minutes, until bubbly and hot. Garnish with chopped parsley, if desired. Serves about 8 as a side dish. Serve while hot.

Notes

When boiling potatoes, make sure not to over-boil to the point where they fall apart. Just boil till tender and drain.
When crisping in the oven, all ovens work at a different rate. It's important to monitor potatoes and remove them once they are slightly golden brown. You can decide your own crisp level.

Nutrition

Calories: 358kcal