Potato Casserole.jpg

Gluten Free Au Gratin Potato Casserole Recipe

This is a great way to use up the extra leftover meat from a previous meal. It feeds an entire houseful of company, but doesn’t feel like “leftovers.” The creamy sauce is phenomenal – you’re really going to love it!

5 from 1 vote
Potato Casserole.jpg
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Gluten Free Au Gratin Potato Casserole Recipe

Prep Time15 mins
Cook Time5 hrs
Total Time5 hrs 15 mins
Course: Side Dish
Cuisine: American
Servings: 10 people
Calories: 339kcal


  • Gluten-free nonstick cooking spray
  • 6 baking potatoes Idaho or Russet peeled and sliced into ¼-inch pieces
  • 2 cups leftover ham or turkey diced
  • 1 medium white onion peeled and diced
  • 4 teaspoons dry mustard
  • 2 teaspoons ground thyme
  • teaspoons kosher or fine sea salt
  • 1 teaspoon freshly ground black pepper
  • ¼ teaspoon white pepper
  • 2 cups half-and-half
  • cups 1% milk
  • ½ cup unsalted butter melted
  • 1 cup shredded cheddar cheese


  • Use a 6-quart slow cooker sprayed well with cooking spray. Put ⅓ of the potato slices into the slow cooker insert and add a handful of cooked and diced meat. In a large mixing bowl, combine all the other ingredients. Pour ⅓ of this mixture onto the meat and potatoes. Repeat layers of potatoes, meat, and the mixture, until you run out of ingredients.
  • Cover and cook on low for 8 hours or on high for about 5 hours. Uncover and continue to cook on high for an additional 30 minutes to release the condensation.


Nutrition Facts
Gluten Free Au Gratin Potato Casserole Recipe
Amount Per Serving
Calories 339 Calories from Fat 180
% Daily Value*
Fat 20g31%
Saturated Fat 12g60%
Cholesterol 70mg23%
Sodium 484mg20%
Potassium 720mg21%
Carbohydrates 28g9%
Fiber 1g4%
Sugar 3g3%
Protein 12g24%
Vitamin A 655IU13%
Vitamin C 8.7mg11%
Calcium 204mg20%
Iron 1.7mg9%
* Percent Daily Values are based on a 2000 calorie diet.
Disclaimer: All nutrition facts on Gluten Free & More are meant only as a guide and may differ depending on product brands used or ingredient substitutions. Some errors may occur, so you are encouraged to confirm the recipe’s ingredient and nutrition suitability for your own diet.
Have you tried this recipe? Give it a star rating and let us know your thoughts in the Ratings & Reviews section below.
Tags: Casserole Cheddar Cheese Dinner Gluten-Free Gluten-Free Recipes Ham Magazine Potatoes Slow Cooker Turkey
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