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Secret-ingredient roast potatoes recipe

Secret-ingredient roast potatoes recipe

14 ratings

Crunchy and super-tasty, everyone will be talking about your roasties, but you needn't let anyone know the secret ingredient if you don't want to! Perfect for Christmas dinner, a special Sunday lunch or any roast dinner. See method

  • Serves 8
  • Takes 1 hr 15 mins
  • 322 calories / serving
  • Healthy
  • Vegetarian


  • 2kg floury potatoes
  • 3 tbsp vegetable oil
  • 75g butter
  • 50g Marmite
Low in sugar; low in salt

Each serving contains

  • Energy

  • Fat

    13g 19%
  • Saturates

    5g 26%
  • Sugars

    2g 2%
  • Salt

    0.7g 12%

of the reference intake
Carbohydrate 41.4g Protein 7.2g Fibre 4.1g


  1. Preheat the oven to gas 7, 220°C, fan 200°C. Tip 2kg peeled and chopped floury potatoes into a lidded saucepan, cover with cold water and season with salt. Cover, bring to the boil, then reduce to a simmer for 7 mins, or until just tender. Drain in a colander, then set aside for 10 mins.
  2. Meanwhile, divide 3 tbsp vegetable oil between two baking trays and heat these in the oven. Melt together 75g butter and 50g Marmite in a small saucepan over a low-medium heat for 2-3 mins. Return the potatoes to the pan and pour over the Marmite mixture. Season with pepper, put the lid on and gently shake the pan to fluff up the potatoes and coat them in the buttery Marmite mixture.
  3. Remove the baking trays from the oven and divide the potatoes between them, turning them in the oil to coat. Roast for 45-50 mins, turning halfway, until crisp and golden.

Tip: Swap the butter for dairy-free spread to make these vegan and dairy-free.

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