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Overnight Mashed Potatoes

These are the most amazing and yet easy overnight mashed potatoes.
Course Side Dish
Cuisine American
Prep Time 30 minutes
Cook Time 1 hour 30 minutes
Total Time 2 hours
Servings 12 people
Calories 208kcal


Overnight Mashed Potatoes - Ingredients

  • 3 lbs. russet potatoes
  • 1 1/2 cup sour cream
  • 6 Tbsp softened butter divided
  • 1 1/2 tsp salt
  • 1/4 tsp black pepper


How to Make Overnight Mashed Potatoes

  • Cut potatoes into quarters.
  • Cook potatoes for about 25 minutes in boiling salted water. You will know they are done when they pierce easily with a fork.
  • Drain potatoes and put them in a large mixing bowl.
  • Combine potatoes with sour cream, 4 Tbsp butter, salt and pepper.
  • Beat the potato mixture until light and fluffy on low speed.
  • Pile into a 9x13 casserole pan. Cover and refrigerate overnight (I have made mine the same day too).
  • Bake covered in a preheated 325 degree oven for an hour.
  • Toss with 2 Tbsp melted butter.
  • Continue baking uncovered about 30 minutes longer.