Slow Cooked Au Gratin Potatoes

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4-6 servings

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  • Coat the interior of the slow cooker crock with cooking spray. Evenly layer the potatoes with the onions. Sprinkle each layer with a pinch of salt and pepper.
  • In a medium sauce pan, melt the butter over medium heat. Add the flour and cook for 1 minute, until the butter is completely absorbed. Slowly add the milk and heat for 3 – 5 minutes, or until slightly thickened. Do not allow the sauce to boil. Remove from heat and add all three cheeses at once. Stir until the cheeses have melted.
  • Pour the cheese sauce over the potatoes. Cook the mixture on high for 3-4 hours, or until the potatoes have completely softened. There should be no need to stir during cooking.


Serves about 4 – 6 people as a side. The recipe can be easily doubled.

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