Potato Onion Gratin

Potato onion Gratin


With  potatoes, how can one go wrong?

This is one of my favorite dishes of potatoes. My mother taught me to prepare a few years ago and since then has been a regular at our table.

The touch of onion and Parmesan cheese give it a unique flavor that I’m sure you and your family  will love too.


  • 2 Tablespoon of butter
  • 1 1/2  cup of half-and-half
  • 1 1/2 cup of heavy cream
  • 1 egg
  • 6 medium Yukon Gold potatoes, peeled  and sliced paper-thin
  • 1 large yellow onion, thinly sliced
  • 2 teaspoons of salt
  • 1 teaspoon of pepper
  • 1 teaspoon of garlic powder
  • 1 cup grated Parmesan cheese (about 4 oz)


  1. Preheat the oven to 400 degrees F.
  2. Butter a medium baking dish.
  3. In a mixing bowl, whisk the heavy cream, half and half and egg together. Whisk well. Season with salt and pepper.
  4. Spread a layer of potatoes in the bottom of the prepared dish, slightly overlapping the slices. Place a layer of the onions. Season with  salt, pepper and garlic. Sprinkle with Parmesan cheese. Repeat the above process until you complete 3 layers ending with a layer of potatoes.
  5. Add the cream, top with Parmesan cheese and and dot with remaining tablespoon butter.
  6. Cover with foil. Bake 1 hour until potatoes are tender. Uncover and  bake until until golden brown, about 15 minutes more. Let stand 5 minutes before serving.








  1. This looks like a great side dish and not that time consuming to fix. Love it.

  2. I think I could eat the entire thing myself!

  3. You had it right – you CAN’T go wrong with potatoes… and CHEESE! 😉

  4. This looks fantastic! I wonder if it would work with a slow cooker?

    • mommyhoodsdiary says:

      Hi Amiyrah! I think it could work but the only thing is that you won. Let me know how you like it!

  5. That dish looks so yummy!

  6. Mayito Castillo says:

    Hola Ory.. Esta es una receta bien recibida, se ve delicioso me encantan todo lo que contenga patatas.
    Te pido el favor de aclararme que dice en el # 2 de los ingredientes? Gracias por publicarla.

    • mommyhoodsdiary says:

      Hola Mayito!! El ingrediente #2 es crema half and half. Es esa crema que se le pone al cafe. Lo puedes encontrar en el mercado en la parte de los refrigerados. Se llama así mismo half and half y viene como en un pote de cartón. Si tienes otra duda dejame saber…. esta receta queda deliciosa!!!

  7. Mayito Castillo says:

    Hracias Ori por tu aclaracion. La tengo que hacer porque se ve exquisita.

  8. Katherine G says:

    This sounds so delicious!!!

Speak Your Mind