Mom’s Au Gratin Potatoes Recipe

Jessica Published March 23, 2020

This au gratin potato recipe is so easy and delicious! You can half or double again the cheese sauce amounts if you like your potatoes saucy. This recipe is pared down from a restaurant recipe for 10 lb potatoes.

How To Make Mom's Au Gratin Potatoes

0 from 0 votes
10 mins
60 mins
70 mins


  • 2 1/2 lb. potatoes cooked, cooled, peeled and sliced
  • 3 1/8 cup milk, heated to warm (in the microwave)
  • 1/4 cup minced onion
  • 1/4 cup butter
  • 1/4 cup flour
  • salt and pepper to taste
  • 3/4 cup American or white Cheddar cheese shredded
  • enough cheese slices to cover the top


  • Cook the potatoes in a covered pan in their jackets in salted water until tender. Cool then peel the potatoes and slice them.
  • In a heavy saucepan, saute the onions in the butter. Add flour and slightly brown it. Add the warm milk, cheese,¬†salt and¬†pepper. Cook until thickened and cheese is melted.
  • Gently mix the cheese with the potatoes. Put in a 9x13-inch pan and cover the top with the cheese slices.
  • Bake at 350 degrees for 1 hour or until center is hot.


A food blogger with a strong passion for all thing delicious. Being able to take a simple ingredient and transform it into something complex and delectable brings me joy. It is my mission to show you how to do the same with the simple ingredients that you have on hand. Learn how to make restaurant-worthy meals, on a budget, and right at home!

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