Ultimate Chicken and Mushroom Pie
with Creamy Mash and Sauteed Peas
- Cereals containing gluten
- Mustard
- Milk
Looking for a taste of everyday luxury? This Ultimate Chicken and Mushroom Pie is our best ever version, with premium ingredients for an extra special twist on a classic recipe.
Ingredients
½
Puff Pastry Sheet
(Contains: Cereals containing gluten)
260
Diced Chicken Breast
80
Sliced Mushrooms
2
Garlic Clove
450
Potatoes
10
Chicken Stock Paste
17
Wholegrain Mustard
(Contains: Mustard)
150
Creme Fraiche
(Contains: Milk)
120
Peas
Not included in your delivery
100
Water for the Sauce
Nutrition Values
Utensils
Cooking Steps
Preheat your oven to 240°C/220°C fan/gas mark 9. Remove the puff pastry from your fridge.
Bring a large saucepan of water with 1/2 tsp salt to the boil for the potatoes.
Heat a drizzle of oil in a large frying pan on medium-high heat.
Once hot, add the chicken and mushrooms to the pan. Season with salt and pepper, then cook until browned all over, 5-6 mins, stirring occasionally. IMPORTANT: Wash your hands and equipment after handling raw chicken and its packaging.
Meanwhile, peel and grate the garlic (or use a garlic press).
Peel and chop the potatoes into 2cm chunks.
When your pan of water is boiling, add the potatoes and cook until you can easily slip a knife through, 15-20 mins.
Once the chicken has browned, add the garlic and stir-fry until fragrant, 30 secs.
Stir in the water for the sauce (see ingredients for amount), chicken stock paste, mustard and half the creme fraiche.
Bring to the boil, then lower the heat and simmer gently until the chicken is cooked through and the sauce has thickened, 5-6 mins. Season with salt and pepper. IMPORTANT: The chicken is cooked when no longer pink in the middle.
Transfer the chicken and mushroom filling to an appropriately sized pie dish.
Cover with the puff pastry (see ingredients for amount), trimming off any excess. Press some of the pastry over the side of the dish if you can, or just sit it on top. Make a small hole in the middle - this allows the steam to escape. TIP: Brush the pastry with a little milk if you have some.
Bake the pie on the top shelf of your oven until golden brown, 15-20 mins.
Once the potatoes are cooked, drain in a colander and return to the pan, off the heat.
Add the remaining creme fraiche and mash until smooth and velvety. Season with salt and pepper, then cover with a lid to keep warm.
Meanwhile, clean the (now empty) frying pan - you'll use it for the peas.
Once the pie is out of the oven, allow it to stand for 2-3 mins.
Meanwhile, pop the frying pan on medium heat with a drizzle of oil. Once hot, add the peas and stir-fry for 2-3 mins, then remove from the heat and season with salt and pepper. Reheat your mash if necessary.
When ready, serve your ultimate chicken and mushroom pie on plates with the peas and creamy mash (reheat first if necessary) alongside. Enjoy!
Customer reviews
Review summary
Updated on Aug 2026- Flavour: The pie filling is widely praised for its depth of flavour, with the wholegrain mustard and creme fraiche sauce making a satisfying combination. Those who find the mustard too strong suggest using half the quantity.
- Ease of prep: Most find this surprisingly straightforward to pull together, even for first-time pie makers. The ready-prepped ingredients make the process feel manageable on a weeknight.
- Suggestions: Use a small, deep pie dish to keep the filling-to-pastry ratio balanced; individual dishes work particularly well. Adding flour to the sauce before the liquid, or simmering it a little longer, helps achieve a thicker consistency. Some cooks stir the peas into the filling rather than sautéing them separately, and a few add carrots, leek, or extra mushrooms to bulk out the filling.
- Next-day meals: Leftover pastry keeps well and lends itself to sweet or savoury uses — apple turnovers, jam tarts, and cheese-and-onion pasties all get a mention. The pie itself reheats well the following day.
- Portions: The pastry is generous, but several cooks felt the chicken and sauce filling was on the light side, particularly for two hungry adults; adding extra chicken or vegetables helps balance this out.
