Creamy Béchamel Chicken Gratin
Poultry

Creamy Béchamel Chicken Gratin

ML
By Marie Lefebvre · Updated September 19, 2026

Tender golden chicken pieces smothered in a velvety béchamel sauce, then baked under a bubbling layer of melted gruyère — this French-inspired gratin is comfort food at its finest. Rich, unfussy, and deeply satisfying, it brings the warmth of a Sunday family table to any weeknight.

Prep⏱️ 30 min
Servings👥 6 servings
Difficulty📊 Easy
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🛒 Ingredients

6 servings

6
  • 1 kg (2.2 lb) chicken breasts
  • 2 tbsp butter (+ 1 tbsp for the sauce)
  • 2 onions, thinly sliced
  • 1 chicken stock cube
  • Salt and freshly ground black pepper
  • 1 cup (250 ml) warm whole milk
  • ¾ cup (200 ml) heavy cream
  • 1 tbsp all-purpose flour
  • 150 g (5 oz) cream cheese
  • 100 g (3.5 oz) grated gruyère cheese
  • 1 pinch of grated nutmeg
  • Herbes de Provence (optional)

Directions

  1. 1

    Cut chicken breasts into large chunks. Melt 2 tbsp butter in a large skillet over medium-high heat. Add sliced onions and chicken, crumble the stock cube over the top, season with salt and pepper, and sauté until golden brown on all sides, about 8-10 minutes. Set aside.

  2. 2

    Make the béchamel: melt 1 tbsp butter in a saucepan over low heat. Add the flour all at once and stir vigorously for 1 minute to form a roux. Gradually whisk in the warm milk and cook for 3 minutes until thickened. Stir in the heavy cream, cream cheese, and nutmeg. Season to taste.

  3. 3

    Preheat oven to 400 °F (200 °C). Arrange the golden chicken in a baking dish, pour the creamy béchamel generously over the top, and spread the grated gruyère in an even layer.

  4. 4

    Bake for 15-20 minutes until the surface is golden and bubbling. Remove from oven and rest for 2 minutes.

  5. 5

    Serve immediately alongside basmati rice, fresh pasta, or mashed potatoes.

💡 Chef's Tip

For an extra-crispy top, switch the oven to broil for the last 2 minutes. Never skip the nutmeg in the béchamel — it is the small secret behind that classic French depth of flavour.