Sandy S Holiday Mashed Potato Casserole Recipe

Elevate your holiday feast with this creamy, dreamy mashed potato casserole! My mother-in-law's legendary recipe is perfect for Thanksgiving, Christmas, or any special occasion. Make it ahead of time (the day before!) for effortless holiday entertaining. This comforting classic features fluffy mashed potatoes, rich cream cheese, and a hint of garlic, all baked to golden perfection. Get ready for rave reviews!

Prep Time 30 mins
Cook Time 135 mins
Calories 307.4 kcal
Protein 13g
Rating Be the first
Sandy S Holiday Mashed Potato Casserole 99

Recipe Actions

Share this recipe:

Recipe Author

Forktionary editorial kitchen team

The Forktionary Kitchen Team

Adapted from Food.com, then tested & standardized by Forktionary.

Ingredients for Sandy S Holiday Mashed Potato Casserole

Cook Smarter with Sous, Your Kitchen Companion

Missing an ingredient for this Sandy S Holiday Mashed Potato Casserole? Need a perfect wine pairing or a healthy side dish idea? Don't guess—ask Sous! Your AI-powered sous-chef is ready to help you swap ingredients, adjust serving sizes, and discover flavor tips in seconds.

How to Make Sandy S Holiday Mashed Potato Casserole

  1. Peel and chop 3 lbs russet potatoes into 1-inch pieces. Boil in salted water until easily pierced with a fork (about 15-20 minutes).
  2. Drain the potatoes thoroughly. Return them to the pot and mash until smooth.
  3. Add 8 oz cream cheese (softened), 1/2 cup (1 stick) unsalted butter (melted), 1/2 cup sour cream, 1/2 cup heavy cream, and 2 large eggs to the potatoes. Mix until well combined.
  4. Stir in 1 teaspoon salt and 1/2 teaspoon garlic salt.
  5. Grease a 9x13 inch baking dish. Pour the potato mixture into the prepared dish and spread evenly.
  6. Dot the top with 2 tablespoons of butter.
  7. Cover the casserole with foil and refrigerate overnight.
  8. Preheat oven to 350°F (175°C). Bake the covered casserole for 45 minutes.
  9. Remove the foil and bake for an additional 15-20 minutes, or until golden brown and heated through.

Nutrition Information (Approximate per serving)

Sodium

12 g

Sugar

6g

Fat

50g

Carbs

11g

Frequently Asked Questions

How long does it take to make Sandy S Holiday Mashed Potato Casserole?

Sandy S Holiday Mashed Potato Casserole takes about 165 minutes from start to finish — roughly 30 minutes to prepare and 135 minutes to cook.

How many calories are in Sandy S Holiday Mashed Potato Casserole?

Sandy S Holiday Mashed Potato Casserole has approximately 307.4 calories per serving, with about 13 g protein, 11 g carbohydrates and 25 g fat.

What ingredients do I need for Sandy S Holiday Mashed Potato Casserole?

The key ingredients for Sandy S Holiday Mashed Potato Casserole are Idaho Potatoes, Cream Cheese, Butter, Sour Cream, Cream, Eggs. See the full list with measurements above.

Reviews

No reviews yet — be the first to share your thoughts on this recipe!

Write a Review