Chicken Supreme

Come sit with me for a second before you start cooking.

This recipe has been with me for years, and it started like most good things in my kitchen, at home with my own children.

I’d been grating mushrooms for them for a while. Not because I read it somewhere or followed a clever tip just because I noticed that when mushrooms were sliced, little hands would find them immediately and move them to the edge of the plate. But grated? Grated they disappeared. Into pasta, into sauces, into whatever I was making. My children ate them without a second thought and never once knew they were there.

So when I got to the nursery kitchen and started thinking about this dish, that memory came with me. Seventy children. All with opinions. And I thought – well, if it worked at home, maybe it’ll work here too.

I won’t pretend I was confident. The first time I made it, I genuinely wasn’t sure the children would even try it. A creamy sauce, mushrooms hiding inside, something a little different from what they were used to. I watched. I waited.

And then something happened that I still remember so clearly.

The whole room went quiet.

Twenty two-year-olds. Silent.

I was in the kitchen, just behind the wall. There wasn’t a door between the kitchen and the dining area, only a safety gate, so i could hear everything. I was cleaning up while the children were eating when I suddenly thought, Why is it so quiet? Any nursery practitioner knows that silence from a room full of toddlers usually means one thing – you’d better go and check.

When I looked over ….and there they were, completely absorbed in their lunch. They were scraping every last bit of sauce from their plates, some were licking them clean, and all I could hear was:

“More! More, please!”

That’s when I knew this recipe was something special.

And then, in the days after, I started getting the question that every nursery cook quietly hopes for: when is it going to be again?

But the moment I remember most is the colleagues. One by one, a few of them came to find me in the kitchen, a little surprised at themselves, to tell me they’d never liked mushrooms. Never. And yet somehow, this had changed their mind.

That’s what this dish does. It’s quiet about it. It doesn’t announce itself. It just makes people enjoy something they thought they didn’t like, and leaves them wondering how.

So if there’s someone at your table who turns their nose up at mushrooms – make this. Don’t say a word. See what happens.

Who knows. Mushrooms might just become their favourite too.

—Jo


Watch me make Chicken Supreme on tiktok
In my TikTok video, I cook the chicken in a pan. Here on the blog, I’m sharing my favourite oven-baked version, which keeps the chicken beautifully juicy. Both methods are delicious, so feel free to choose the one that suits you best.

Chicken Supreme

Recipe by JoCourse: Main CoursesCuisine: BritishDifficulty: Easy
Servings

4

servings
Prep time

30

minutes
Cooking time

40

minutes
Calories

660

kcal

Creamy Chicken Supreme with mushrooms in a rich homemade sauce. A comforting family dinner that’s simple enough for a weeknight and special enough for Sunday lunch.

Ingredients

  • 3 tbsp olive oil

  • 1 large onion, finely diced

  • 250g mushrooms, washed and grated

  • 800g chicken breasts (or boneless thighs)

  • 1tsp dried thyme

  • 1 pinch salt

  • 1 pinch of black pepper

  • 3 tbsp olive oil (for the sauce)

  • 3 tbsp plain flour

  • 750ml whole milk

  • 200ml water

  • 60ml double cream

  • 1 pinch salt (for the sauce)

  • 1 pinch black pepper (for the sauce)

Directions

  • Prepare the chicken
    Remove the chicken from the fridge about 20 minutes before cooking. Season generously with salt and black pepper and place it in a glass or cast-iron baking dish. Bake at 180°C (160°C fan) for 35-40 minutes, or until the juices run clear and the chicken reaches 75°C in the thickest part.
  • Prepare the vegetables
    While the chicken is baking, finely dice the onion and grate the mushrooms.
  • Sauté the onion and mushrooms
    Heat the olive oil in a large pan over medium heat. Sauté the diced onion until soft and translucent, then add the grated mushrooms and dried thyme. Cook until the mushrooms have released their moisture and the pan is almost dry. Don’t rush this step – it builds the flavour of the sauce.
  • Make the roux
    Sprinkle the flour over the mushroom mixture and stir continuously for about 2 minutes, making sure the flour is fully cooked but not browned. This isn’t the hardest step, but it is the most important one. Keep stirring and don’t walk away. If the roux burns, the sauce will taste burnt too, and there’s no saving it.
  • Make the sauce
    Gradually pour in the milk, whisking constantly to prevent lumps from forming. Once the sauce is smooth, add the water and continue stirring until it thickens. Stir in the double cream and season with salt and black pepper to taste.
  • Add the chicken
    Dice the cooked chicken and add it to the sauce along with any juices from the baking dish. Simmer gently for 5 minutes so the chicken absorbs the flavours of the sauce.
  • Serve
    Serve with fluffy rice, mashed potatoes or pasta, and finish with garden peas or your favourite green vegetables.

Jo’s Tips

  • The mushroom trick: Grating rather than slicing mushrooms is the single best thing you can do for fussy eaters. The texture disappears entirely into the sauce. Even people who think they don’t like mushrooms tend to go back for seconds.
    And if you and your family are mushroom lovers – treat yourselves to forest mushrooms. Chestnut, porcini, chanterelle, whatever you can find. They bring something that regular supermarket mushrooms simply can’t match – a wild, seasonal depth, a proper flavour that tastes like it came from somewhere real. The sauce will be something else entirely. Worth every penny.
    Personally I prefer using a glass or cast-iron baking dish instead of aluminium foil. Research has shown that small amounts of aluminium can migrate into food during cooking, particularly at higher temperatures and when food is salty or acidic. Although occasional use of aluminium foil is considered safe for most people, I choose to minimise unnecessary exposure and prefer glass or cast iron. Take your time when making the roux – it’s the most important step. If it burns, the sauce cannot be rescued, so keep stirring and don’t walk away.
    The roux: A flat-edged metal or silicone spatula works better than a wooden spoon here – it gets right into the corners of the pan. Keep stirring and don’t walk away.
    The chicken: Boneless chicken thighs work beautifully here too. They have a little more fat than breast, which makes them slightly more filling and even harder to dry out. If you use thighs, add 5–10 minutes to the baking time and check that the juices run clear.
    Leftovers: This reheats beautifully the next day. The sauce thickens overnight – just add a splash of milk when warming it back up.

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