Make Ahead Mashed Potato Casserole

Name: Make Ahead Mashed Potato Casserole
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: American
Ingredients: 3 lbs russet potatoes ((washed, peeled, and quartered)); 3 Tbsp salt ((to taste)); 2¼ cups milk; 1 cup butter ((2 portions - ¾ cup & ¼ cup - cut into 1 tablespoon pats)); 1 cup sour cream ((room temperature)); 1 cup cheddar cheese ((shredded)); 1 tsp each, salt & pepper ((to taste)); 8 oz cream cheese ((softened, at room temperature)); ½ cup plain breadcrumbs; ½ Tbsp garlic salt

Instructions

Prep:10minCook:40min

This mashed potato casserole features creamy mashed potatoes, cheese, flavorful seasoning, and a crunchy breadcrumb topping! These potatoes are a great way to mix up your standard mashed potato recipes. Plus, it's the perfect recipe for using up leftover potatoes or you can make it from scratch!

Updated at: Thu, 23 Apr 2026 00:08:28 GMT