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 Creamy Chicken Gratin (Leftover Chicken)?

You need 12 ingredients. The key ingredients include: 1 tablespoon olive oil, 1 lb new potato, very thinly sliced, 1 onion, finely sliced, 3 garlic cloves, finely chopped, and more.

Is Creamy Chicken Gratin (Leftover Chicken) suitable as meat & poultry?

Yes, Creamy Chicken Gratin (Leftover Chicken) falls under the Meat & Poultry category and is a great choice for this type of meal.

How do I store leftover Creamy Chicken Gratin (Leftover Chicken)?

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

Creamy Chicken Gratin (Leftover Chicken) Recipe

Name: Creamy Chicken Gratin (Leftover Chicken)
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 tablespoon olive oil; 1 lb new potato, very thinly sliced; 1 onion, finely sliced; 3 garlic cloves, finely chopped; 1 1/4 cups white wine; 7/8 cup chicken broth; 1 tablespoon Dijon mustard; 14 ounces leftover cooked chicken; 1 cup heavy cream; 9 ounces spinach, wilted, excess liquid squeezed out and chopped; 1 ounce breadcrumbs; 1 ounce parmesan cheese, grated

Try this homemade Creamy Chicken Gratin (Leftover Chicken) recipe the whole family will love. Made with olive oil, new potato, onion and garlic. Easy st…

This Creamy Chicken Gratin (Leftover Chicken) relies on simple, everyday ingredients such as olive oil, onion, finely sliced, white wine and chicken broth. It comes together quickly and makes 4 servings, at about 774 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 Meat & Poultry

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

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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Creamy Chicken Gratin (Leftover Chicken)

Tips for the best results

Variations & substitutions

My Personal Notes

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Frequently Asked Questions