How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Sweet Potato Gratin with Carmelized Onion and Parmesan Cheese?

You need 10 ingredients. The key ingredients include: 5 Sweet potatoes - peeled and sliced into thin rounds, 3 Tbsp. of butter, 2 Large onions - peeled and thinly sliced, 2 cloves of garlic - chopped, and more.

Is Sweet Potato Gratin with Carmelized Onion and Parmesan Cheese suitable as general?

Yes, Sweet Potato Gratin with Carmelized Onion and Parmesan Cheese falls under the General category and is a great choice for this type of meal.

How do I store leftover Sweet Potato Gratin with Carmelized Onion and Parmesan Cheese?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Sweet Potato Gratin with Carmelized Onion and Parme

Name: Sweet Potato Gratin with Carmelized Onion and Parmesan Cheese
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 5 Sweet potatoes - peeled and sliced into thin rounds; 3 Tbsp. of butter; 2 Large onions - peeled and thinly sliced; 2 cloves of garlic - chopped; 1 1/2 Cups of heavy whipping cream; 1 1/4 Cups of grated parmesan; 1 tsp. of salt; 1 tsp. of pepper; Olive oil; 1 Tbsp. of dried parsley

Try this homemade Sweet Potato Gratin with Carmelized Onion and Parmesan Cheese recipe the whole family will love. Made with Sweet potatoes, butter, oni…

This Sweet Potato Gratin with Carmelized Onion and Parmesan Cheese relies on simple, everyday ingredients such as of butter, of garlic - chopped, of heavy whipping cream and of grated parmesan. It comes together quickly and makes 4 servings, at about 638 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 General

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Sweet Potato Gratin with Carmelized Onion and Parmesan Cheese

Tips for the best results

Variations & substitutions

My Personal Notes

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