Portobello Kievs with Mash and Peas: Our Plant-Forward Chicken Kiev
The chicken kiev, gently reimagined: a meaty portobello cap, a spoonful of garlic and herb butter, golden crumbs, served on the same plate of crushed potatoes and peas you remember.
Portobello Kievs with Mash and Peas
🔪 Prep Time: 5 mins
👩🍳 Cook Time: 30 mins
👥 Serves: 4
Ingredients
12 portobello mushrooms, whole
5 tbsp butter, divided (1 tbsp for the potatoes, 4 tbsp for the garlic butter)
2 cloves garlic, finely grated
1 bunch parsley, finely chopped (half for the butter, half to scatter)
2 slices sourdough (or any bread you have)
2 tbsp extra virgin olive oil, divided (1 tbsp for the mushrooms, 1 tbsp for the crumbs)
800g baby potatoes
500g frozen peas
Method
Heat the oven and start the potatoes. Preheat the oven to 220°C. Cook the spuds. Boil in salted water until well tender. Drain, crush lightly with a fork or potato masher, and fold through 1 tbsp butter and 6 tbsp of potato water. They should be part mashed and part chunky.
Meanwhile roast the mushrooms.Meanwhile, place the mushrooms gill-side up in a baking tray. Drizzle them with oil, season, and roast at 220°C until tender and juicy (roughly 11 mins). Add some thyme or rosemary to each mushroom if you have some.
Then, make the garlic butter by blending 4 tbsp butter, 2 grated garlic cloves and half a bunch of parsley.
Make chunky breadcrumbs. Blitz the sourdough to rough, uneven crumbs. You want texture, not powder.
Toast the crumbs. In a pan, fry the breadcrumbs in a tbsp of olive oil until golden. Set aside in a bowl.
Cook peas briefly in the bread crumb pan with a splash of water, drain.
Build the plate. Pile the crushed potatoes onto plates and add the peas alongside. Sit the roasted mushrooms gill-side up on top. Spoon the garlic butter generously over each one so it melts into the gills. Scatter with the remaining parsley and the toasted crumbs. Serve immediately.
Why Portobello Mushrooms Work So Well Here
A chicken kiev is, at heart, a vehicle for garlic butter. The chicken itself is mild; what you taste is the herby butter pooling into whatever it sits on. Portobello mushrooms do the same job, often better. Their gills are made for catching melted butter, and a hot roast concentrates their flavour into something deeply savoury.
They also bring the meaty texture you want on this kind of plate. Bite through the buttery, herby top and the mushroom underneath has real substance. It isn't pretending to be chicken. It's just doing the same job in its own way.
A practical tip: roast them gill-side up so the juices stay in the cap. That little pool is exactly where the garlic butter is going to land, and you don't want to lose it to the tray.
Tips and Variations
For extra depth: Tuck a few sprigs of thyme or rosemary in with the mushrooms as they roast.
No sourdough? Any leftover bread works for the crumbs. Stale is actually better. White, brown, soda bread, all fine.
Make it vegan: Swap the butter for a good plant-based block (the kind that browns) and you'll lose very little.
Bigger appetites: Serve four mushrooms per plate instead of three, or add a sharp green salad on the side.
A Small Change That Adds Up
A typical chicken kiev produces roughly six times the emissions of an equivalent plant-based meal, gram for gram. You don't have to give the dish up to bring that number down. Same plate, same garlic butter, same mash and peas. Just a different ingredient in the middle.
That's the whole idea behind our Family Favourites, Reimagined series. Take the meals families already cook and love, and find one small swap that makes them gentler on the planet without changing what they are.
Meal Prep and Storage
The garlic butter: Keeps for 5 days in the fridge, or freezes for up to 3 months. Roll it in cling film into a log and slice off rounds as you need them. Useful on toast, vegetables, pasta, far more than just kievs.
The mushrooms: Best eaten fresh. Roasted mushrooms lose their texture in the fridge.
The mash: Reheats well with a splash of milk or a little extra butter, but is at its best straight from the pan.
Frequently Asked Questions
Can I freeze portobello kievs? The garlic butter freezes beautifully, but the assembled dish doesn't. Roast the mushrooms fresh and use frozen butter portions to save time on a weeknight.
Are portobello mushrooms a good substitute for chicken? For dishes built around sauces and butters, yes. Their meaty texture, savoury flavour, and ability to soak up seasoning make them a natural fit for kievs, fajitas, or a Sunday roast.
Can I make this kid-friendly? The flavours are mild and familiar: buttery, garlicky, herby. Younger kids may prefer one mushroom rather than three, chopped through the mash.
What can I use instead of sourdough breadcrumbs? Any bread will do. Stale bread is actually better, as it crisps up faster. Panko works well too.
Can I cook the mushrooms ahead? You can roast them an hour or two ahead and warm them through briefly before serving. Any longer and you lose the texture.
What should I serve them with? The mash and peas are the classic pairing, but a sharp green salad or roasted asparagus also works well, especially in spring.
Bring This Plate to Your Week
This recipe features in our May meal plan, Long evenings, alongside a grilled lettuce and green goddess salad and a bright pasta primavera.
📲 Download the Feeds app to adjust servings, add it to your shopping list, and discover more meat-free family meals.
Tags: Recipes, Family Favourites