Main Meals

Chicken casserole with mashed potatoes

By
27 May 2026
4 to 6
Easy
20 minutes
50 minutes

Leeks and onions bring a soft, slightly sweet depth to this creamy chicken casserole, while butter beans add creaminess and texture that makes the dish feel more substantial without extra effort. A touch of Dijon mustard lifts the richness of the cream, balancing the flavours beautifully. Paired with buttery mashed potatoes, this is a simple, one-pot meal that delivers maximum comfort with minimal fuss. It’s perfect for easy weeknight cooking or relaxed weekend dinners.

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Ingredients

Method
  • 8 free-range chicken thighs
  • sea salt and freshly ground black pepper, to taste
  • 2 T olive oil
  • 2 T butter
  • 2 large leeks, thinly sliced
  • 1 onion, chopped
  • 3 cloves garlic, minced
  • 1 T Dijon mustard
  • 2 t flour
  • 2 cups chicken stock
  • ½ cup cream
  • 1 x 400 g can butter beans, drained and rinsed
  • 1 T fresh thyme leaves
  • 1 lemon
  • For the mashed potatoes:

  • 1 kg potatoes, peeled and cubed
  • 1 T butter
  • ¼ cup milk or cream, heated
  • salt, to taste

Method

Ingredients

1. Preheat the oven to 180°C. Season the chicken with salt and pepper.

2. Heat the olive oil and butter in a large ovenproof casserole or cast-iron pan over a medium-high heat. Brown the chicken, skin-side down first, for 4–5 minutes on each side until golden. Remove from the pan and set aside.

3. Using the same pan, reduce the heat to medium and sauté the leeks and onion for 6–8 minutes or until soft. Add the garlic and cook for 1 minute.

4. Stir in the mustard and flour, then add the chicken stock and cream. Bring to a gentle simmer.

5. Add the butter beans and thyme, then return the chicken to the pan, skin-side up.

6. Transfer the pan to the oven and cook, covered, for 15 minutes. Cook uncovered for a further 15–20 minutes, or until the chicken is cooked through and the sauce has thickened slightly. Adjust the seasoning if necessary. Squeeze over the lemon while the casserole is still hot.

Find more chicken recipes here

Videographer: Fred Wollner

Photographer: JP Fourie

Masego Mbonyana

Recipe by: Masego Mbonyana

Masego Mbonyana is a chef and food stylist. You can follow her on @mealswithmasego  on Instagram.

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