Potatoes Au Gratin with Smoked Sausage are russet potato rounds with smoked sausage nestled in between the potatoes, topped with a creamy cheese sauce. If you love cheesy potatoes, be sure to check out my Scalloped Potatoes too!

Overhead of Potatoes Au Gratin with Smoked Sausage in Pan

Potatoes Au Gratin with Smoked Sausage

Potatoes Au Gratin are similar to scalloped potatoes as they both are potato rounds covered in a cream sauce. The main difference is the addition of cheese to the cream sauce and oftentimes a breadcrumb crust in au gratin potatoes. In fact, au gratin means ‘by grating’, which refers to the added cheese and breadcrumbs.

This recipe was a suggestion from one of my readers and has Velveeta cheese added to the cream sauce as well as smoked sausage in between the potato slices. And, I am so glad I took the suggestion; it is cheesy and delicious!

Spoonful of Potatoes Au Gratin with Smoked Sausage

Potatoes Au Gratin Ingredients

Potatoes: I used russet potatoes for this recipe; starchy potatoes help thicken the sauce and will bake fork-tender. Yukon gold potatoes would also work well. Be sure to wash the potatoes before peeling and slicing them. I will give you some tips on how to make the potato rounds uniform for best results when cooking.

Sausage: I chose a ring of pre-cooked smoked sausage (andouille) in this recipe. You could also use turkey sausage, chorizo, or Polish kielbasa. 

Milk: I recommend using whole milk in this recipe. If you use milk with a lower fat content (1% or skim), there is a possibility that the sauce will curdle. Also, make sure the milk is at room temperature before adding it to the sauce.

Cheese: I used Velveeta cheese in this recipe. Velveeta cheese is processed cheese, but it keeps its smooth consistency when melted, which is perfect for the sauce on these potatoes!

Process for Potatoes Au Gratin with and without Smoked Sausage

Slicing the Potatoes {Tips for Uniform Potato Rounds}

The first thing to do for this Potatoes Au Gratin with Smoked Sausage recipe is to rinse, peel, and slice the potatoes. One of the signature traits of this dish is its uniform potato size. We don’t just scatter the potatoes around and hope for the best, we lay them out perfectly straight, which makes it look beautiful and helps the dish cook evenly. 

Be sure to use a mandoline slicer (affiliate link) for uniform slices. Your mandoline should have a “thin slice” blade and I recommend that for this dish. One of the beautiful aspects of this au gratin potato dish is how the potatoes are laid out. To make sure you can replicate it, use your mandoline right on the cutting board. Using it over a bowl will cause the potatoes to separate and they will not be lined up as they are in this recipe. I cut one potato at a time and set them aside while I work on the next one.

Pouring Cheese over Potatoes Au Gratin with Smoked Sausage

What is the Difference Between Au Gratin and Scalloped Potatoes?

As I stated above, there is a difference between au gratin and scalloped potatoes. Traditionally, scalloped potatoes do not have cheese; they have a heavy cream sauce and are much simpler. Au Gratin potatoes, on the other hand, are made with cheese and sometimes sprinkled with breadcrumbs on top.

Another difference between the two recipes is the size of the slices of potatoes. In both cases, the potatoes are cut into rounds; however, scalloped potatoes are generally thicker cut than au gratin.

Spoonful of Potatoes Au Gratin with Smoked Sausage

Can I Freeze Potatoes Au Gratin?

Yes! Once the dish has been baked, let it come to room temperature. (But, don’t let them sit out for more than 2 hours before storing them.) Then, store them in a freezer-safe container that is labeled and dated. They will be good for up to 2 weeks in the freezer.

Bowl of Potatoes Au Gratin with Smoked Sausage

More Side Dishes

5 from 4 votes

Potatoes Au Gratin with Smoked Sausage

Prep Time 20 minutes
Cook Time 1 hour 3 minutes
Total Time 1 hour 23 minutes
Potatoes Au Gratin with Smoked Sausage are russet potato rounds with smoked sausage nestled in between the potatoes, topped with a creamy cheese sauce.


  • 1 ring (13 ounces) smoked sausage, or kielbasa, sliced into ¼-inch pieces
  • 3 pounds Russet potatoes, rinsed, peeled, and thinly sliced with a mandoline
  • ½ yellow onion, diced
  • ½ cup all-purpose flour
  • 6 tablespoons unsalted butter
  • 2 teaspoons kosher salt
  • ½ teaspoon pepper
  • 3 cups whole milk, room temperature
  • 8 ounces velveeta cheese cubed
  • parsley, for garnish
  • salt and pepper, to taste


  • Preheat oven to 375°F and set out a 15-inch oven-safe skillet.
  • In a medium saucepan, melt the butter and diced onion over low heat until the onion is softened (3-5 minutes). Then, add the flour, salt, and pepper and cook for 1 minute, stirring constantly.
  • Slowly drizzle in milk, whisking constantly. Continue cooking until the mixture thickens (about 5 minutes), whisking frequently.
  • Stir in the cheese, and continue stirring until melted and smooth. Set aside.
  • To the skillet, add the potatoes, fanning them out into a single layer. Stagger the slices of sausage in between the potato rounds.
  • Pour the cheese sauce over the top of the potatoes and sausage.
  • Cover the skillet with aluminum foil and bake for 60 minutes, or until potatoes are fork-tender.
  • After 60 minutes, remove the foil and broil for 4-5 minutes, watching carefully, to brown the top.
  • Serve hot, garnished with parsley. Salt and pepper to taste.

Did you make this recipe?

You can tag me at @iamhomesteader.

Share with your friends!

Categorized in: ,

Related Recipes

Meet Amanda Rettke

Reader Comments

    1. 5 stars
      This is so good and easy. I just threw it together again tonight. Sometimes, like tonight, I just throw a pack of brats on it instead of the other sausage the last 15 minutes. The guys love it. And it’s cold and rainy tonight here in the PNW, so it’s perfect. I do add a couple cloves of garlic, a couple cups of shredded cheddar and a little Gouda when I make it.

  1. Love the idea of making this from scratch since it isn’t hard and the boxed option is not all that enticing; but I’d go the extra mile and use real cheeses.

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating