Creamy Au Gratin Potatoes Recipe

During the week, most of my meals consist of a quick main dish and then a fruit or veggie side dish that I throw together in a matter of seconds. However, every once in a while, I totally catch my family off-guard and whip up an actual honest-to-goodness side dish- something besides pasta-a-roni or minute rice (did I just admit that?!). 🙂

This recipe is seriously simple to make- ALMOST as simple as boxed potatoes. It is made with ingredients you already have, making it even easier. And I promise that your family will give you rave reviews and think of you as a domestic goddess! Who knows- maybe you’ll even get a foot rub out of it. These are some magic potatoes!

Serves: 8

Creamy Au Gratin Potatoes Recipe

15 minPrep Time

1 hr, 40 Cook Time

1 hr, 55 Total Time

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  • 4 russet potatoes, sliced into 1/4 inch slices
  • 1/2 onion, diced
  • salt and pepper to taste
  • 3 Tablespoons butter
  • 3 Tablespoons all-purpose flour
  • 1/2 teaspoon salt
  • 1/2 teaspoon garlic powder
  • 2 cups milk
  • 2 cups shredded sharp Cheddar cheese


  1. Preheat oven to 400 degrees F.
  2. Spray a 8x11" casserole dish with non-stick cooking spray.
  3. In a medium-size saucepan, melt butter over medium heat.
  4. Mix in the flour, salt, and garlic powder and stir constantly with a whisk for one minute.
  5. Stir in milk.
  6. Cook until mixture has thickened.
  7. Stir in cheese all at once, and continue stirring until melted, about 30 to 60 seconds.
  8. Layer 1/2 of the potatoes into the bottom of the prepared casserole dish and season with salt and pepper.
  9. Top with the diced onions, then pour half of the cheese mixture on top of the onions.
  10. Layer the rest of the potatoes, season with salt and pepper, and top with the remaining cheese sauce.
  11. Cover the dish with aluminum foil and bake for 80-90 minutes (I usually remove the foil for the last 15 minutes so that the top can brown just a little bit).


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