Easy Parmesan Potatoes Au Gratin Recipe
This recipe for Easy Parmesan Potatoes Au Gratin is irresistibly delicious and the perfect special occasion side dish.  With thinly sliced, tender Russet potatoes, nestled in a thick and decadent cream sauce and nutty parmesan cheese, this thoroughly indulgent side dish just might edge out your entrée and become the star of the show!
Servings Prep Time
6servings 15minutes
Cook Time
Servings Prep Time
6servings 15minutes
Cook Time
  • 3 Russet potatoeslarge, peeled and thinly sliced (about 1/8 inch thick)
  • 2-1/2cups heavy cream
  • 1-1/2tsp kosher salt
  • 1/4tsp ground black pepper
  • 1cup Parmesan cheesegrated
  1. Preheat the oven to 350 degrees F.
  2. Add the cream, salt, and pepper to a large 4-cup measuring cup. Mix well.
  3. Spray a large gratin baking dish with non-stick cooking spray. Place approximately 1/4 of the potato slices in a single layer on the bottom of the dish.
  4. Sprinkle 1/4 cup of the parmesan cheese evenly over the potatoes. Pour 1/2 cup of the heavy cream mixture over the top. Repeat three more times to form four layers, ending with the rest of the cream, then cheese. Press the potatoes down gently with your hand to ensure they are completely covered with cream.
  5. Bake, uncovered for about 60 minutes, or until the top of the potatoes is golden brown, and the potatoes are tender when pierced with a fork. Serve warm.
Recipe Notes


  • A mandoline (not to be confused with mandolin, a musical instrument) will make short work of slicing the potatoes. I have an OXO Good Grips Adjustable Handheld Mandoline Slicer which I love and it’s very easy to use. It is small, easily stored and was under $15.  If you don’t have a mandoline, use a sharp knife and slice the potatoes as thin and as uniformly as possible. If your potatoes are thicker, they will take longer to cook, if they are not a uniform thickness, they will not cook evenly. 
  • A gratin dish is most often an oval stoneware, shallow baking dish, usually only a few inches deep. If you don’t have one, a regular oven-proof casserole dish or a pie plate will work just fine!
Nutrition Facts
Easy Parmesan Potatoes Au Gratin Recipe
Amount Per Serving
Calories 493 Calories from Fat 360
% Daily Value*
Total Fat 40g 62%
Saturated Fat 25g 125%
Polyunsaturated Fat 1g
Monounsaturated Fat 12g
Cholesterol 136mg 45%
Sodium 727mg 30%
Potassium 407mg 12%
Total Carbohydrates 17g 6%
Dietary Fiber 1g 4%
Sugars 1g
Protein 18g 36%
Vitamin A 29%
Vitamin C 23%
Calcium 57%
Iron 4%
* Percent Daily Values are based on a 2000 calorie diet.