Mushroom rarebit with mash & thyme gravy

Mushroom rarebit with mash & thyme gravy

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(7 ratings)

Prep: 30 mins Cook: 1 hr, 20 mins


Serves 4

This is serious British comfort food for a chilly spring day

Nutrition and extra info

  • Vegetarian

Nutrition: per serving

  • kcal624
  • fat33g
  • saturates16g
  • carbs58g
  • sugars9g
  • fibre6g
  • protein23g
  • salt1.28g
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    For the mash

    • 1kg floury potatoes, chopped into chunks



      The world's favourite root vegetable, the potato comes in innumerable varieties. A member of…

    • 25g butter



      Butter is made when lactic-acid producing bacteria are added to cream and churned to make an…

    • 100ml milk



      One of the most widely used ingredients, milk is often referred to as a complete food. While cow…

    For the mushrooms

    • 4 large flat mushrooms, stems removed
    • olive oil, for brushing
      olive oil

      Olive oil

      ol-iv oyl

      Probably the most widely-used oil in cooking, olive oil is pressed from fresh olives. It's…

    • 25g butter



      Butter is made when lactic-acid producing bacteria are added to cream and churned to make an…

    • 1 medium onion, chopped



      Onions are endlessly versatile and an essential ingredient in countless recipes. Native to Asia…

    • 1 tbsp plain flour
    • 75ml Guinness or other stout
    • 140g vegetarian mature cheddar, grated
    • 1 tsp English mustard
    • 2 eggs, beaten



      The ultimate convenience food, eggs are powerhouses of nutrition, packed with protein and a…

    For the gravy

    • 2 tbsp extra-virgin rapeseed oil or olive oil
      Rapeseed oil

      Rapeseed oil

      If you want a light alternative to other cooking oils, rapeseed is a great choice and has…

    • 1 medium onion, chopped



      Onions are endlessly versatile and an essential ingredient in countless recipes. Native to Asia…

    • 2 tsp thyme leaves, plus extra to serve
    • 2 tbsp plain flour
    • 125ml white wine
    • 300ml vegetable stock
    • ½ tsp Marmite


    1. Heat oven to 200C/180C fan/gas 6. Put a large pan of water on to boil and salt it well. Boil the potatoes until tender, about 15-20 mins. Drain, return the potatoes to the pan and place over a low heat. Add the butter and milk, then mash until smooth. Remove from the heat and season with salt. Keep warm.

    2. Meanwhile, brush the mushrooms generously all over with oil. Place gill-side up in a baking dish, bake for 15 mins, then remove from the oven. To make the rarebit topping, melt the butter in a saucepan over a medium heat and fry the onion for 10-15 mins until soft and translucent. Add the flour and cook for 1 min. Reduce the heat, then add the Guinness, cheese, mustard and seasoning, stirring until the cheese has melted. Add the eggs and stir constantly until the mixture thickens, about 5 mins, but don’t overcook or you’ll end up with scrambled eggs. Spoon the rarebit mix into the mushroom caps and set aside.

    3. To make the gravy, heat the oil in a pan over a medium heat and add the onion and thyme. Fry for 10-15 mins until the onion is soft and translucent. Add the flour and cook, stirring, for 2 mins. Add the wine, stock and Marmite, then stir until thick. Simmer for about 5 mins.

    4. Just before serving, heat the grill to high. Place the mushrooms under the grill and cook for a few mins until the rarebit is puffed and golden. Reheat the mash if you need to, place a spoonful on each plate along with a mushroom. Spoon gravy around and over the mash, scatter with thyme and serve.

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    Comments, questions and tips

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    9th Apr, 2016
    Really good vegetarian recipe. Very savoury and also enjoyed by my meat eating husband. Not sure about the gravy though. I have had better vegetarian gravies - a good red wine gravy would be better. Note for a previous comment - when you add the eggs the mixture goes very runny but as you gently cook it it gets very thick. I found there was more mixture than needed for themushrooms so had it on toast the nextmorning. Will definately make this again.
    1st Mar, 2015
    I loved this recipe. I have been meaning to try it for ages. It was worth the wait and I will be making it again! Never bothered with vegetarian gravy before but this really added to the dish.
    MFJB's picture
    23rd Aug, 2013
    Quite boring really, not much flavour and you definitely need vegetables to add some colour to the dish.
    vintageabbie's picture
    8th Dec, 2012
    The rarebit was beyond tasty, really amazing - the gravy was a bit of a disaster for me, I'm not sure it needed it though. Will definitely serve with veg next time for a difference in texture.
    7th Mar, 2011
    tasted my food blog....
    13th Aug, 2010
    I chose to make the mushrooms only as an accompaniment to a main meal of roast chicken. I didn't make the gravy. The consistency of the rarebit became too liquid upon addition of the eggs. I'm not sure what went wrong. I added more cheese and flour in attempt to thicken. It worked a bit, but was still a bit runny. It set a little under the grill. It looked nothing like the picture though. Nevertheless, it tasted very nice and was gobbled up by my family. I do think I will give it another go.
    14th Apr, 2010
    All very delicious but I found the mashed potato & gravy unnecessary. A nice crisp gren salad with the mushroom rarebits is what I will be serving next time
    14th Apr, 2010
    Some great flavours in this dish, however you may wish to serve it in small portions as I found that a big portion of mash with gravy and the mushroom rarebit was all a bit too much thick liquid on one plate. Alternatively serve the the mushroom with pasta, and the mash with beef. Very tasty!
    goosegirl123's picture
    21st Sep, 2014
    I agree with you. Individually each component was quite good but I didn't think it was a good combination.
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    8th Jan, 2016
    I only made the mushrooms but they were absolutely delicious! I did substitute some ingredients tho - shallots for the onion, medium ale instead of stout, added a tiny bit of fresh thyme and used a little less cheese. When added the eggs, really only needed a minute to thicken. Great consistency. Yum!