Instant Pot Potato Au Gratin

By | October 31, 2018

The famous Potato Au gratin is here to make your dinner menu special with the crispy top and delicious potato filling inside.

4 from 2 votes

Instant Pot Potato Au Gratin

Course Main Course
Cuisine French
Keyword butter, cheddar cheese, nutmeg, Potato Au Gratin
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Servings 6
Calories 414 kcal


  • 1 cup water
  • 8 potatoes peeled and diced
  • 2 cups Béchamel sauce
  • 1 cup cheddar cheese grated
  • 1 cup breadcrumbs
  • salt and pepper to season
  • nutmeg powder
  • 1 tbsp butter
  • 1 tsp garlic minced
  • milk optional – only required for thinning sauce if too thick


  1. Select “Steam” function on the Instant Pot pressure cooker.

  2. Set the timer to 5 minutes with high-pressure settings.

  3. Add 1 cup water to the cooking pot and place the steamer basket above it.

  4. Place diced potatoes in the steamer.

  5. Seal the lid and cook for 5 minutes.

  6. Release the steam through natural pressure release. 

  7. Drain the potatoes and add them to a bowl.

  8. Heat butter in a saucepan over medium heat.

  9. Add garlic, Béchamel sauce, combined cheese and nutmeg powder.

  10. Mix well until smooth.

  11. Stir in salt, pepper and potatoes.

  12. Pour this mixture into a shallow casserole dish.

  13. Top it with an even layer of breadcrumbs.

  14. Bake for about 4 to 5 minutes at 350 degrees F in a preheated oven.

  15. Serve warm.

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