Chicken and Leek Casserole

Save this recipe for later!

This chicken and leek casserole recipe promises a delightful blend of tender chicken, aromatic leeks, and savoury flavours that will tantalise your taste buds. This dish is perfect for a cosy family dinner with its comforting warmth and hearty appeal.

Chicken and leek casserole recipes are yummy. This one is creamy and comforting, with a slightly tangy flavour from the wine and mustard. 

It’s actually an update to an old recipe, which was a little simpler. 

We always added carrots to the original recipe when we made it at home because the kids don’t like mushrooms. 

But the earthy flavour of chantenay carrots meant that the reasonably subtle sauce just tasted like carrots, so I also added wine and mustard to give it some more flavour. 

We prefer the version with carrots and flavour, so it was absolutely time for a recipe update to reflect this better flavour. 

casserole in large cast iron dish, served portion to the side.

Why I Love Chicken and Leek Casserole

Simple chicken and leek casserole is one of my favourite family dinners. I love it because:

  • A Creamy chicken casserole is super comforting and perfect for winter dinners. 
  • This new version has plenty of veggies. 
  • I love the tangy flavour. 
  • It’s great with bread or potatoes.
served potion of casserole in white bowl.

Ingredients For Chicken and Leek Casserole

When I make this Chicken breast and leek casserole, I use:

Cooking Spray

Chicken Breasts – You could also make this casserole with boneless, skinless chicken thighs or smaller chicken breast portions.

Pinch Salt and Pepper

Tablespoon Butter – I love the flavour that butter adds, and leeks fried in butter smell incredible, but you can use more cooking spray, a tbsp olive oil, or another cooking oil if you prefer. 

Leeks

White Wine

Shallots 

Chantenay Carrots – You can also use peeled and sliced big carrots. 

Button Mushrooms 

Tarragon

Chicken Stock

Double Cream – This is a creamy chicken stew. 

Wholegrain Mustard

Cornflour

ingredients for chicken and leek casserole on table.
Pretend there’s wine and mustard in this photo. I forgot to carry them from the counter!

You’ll Also Need

I make my Chicken and leek stew (yes, it’s technically a chicken leek stew because it’s made on the hob, but I always call it a casserole, so that’s that) in my large cast iron Dutch Oven. 

You can use any flameproof dish or pan. 

You’ll also need a sharp knife, a chopping board, something to stir, and a jug and whisk for the stock. 

How to Make Chicken and Leek Casserole – Step-by-Step Instructions

Full, easy-to-follow instructions and quantities are available in the recipe card at the bottom of this post.

Step One

Spray a flameproof dish or pan liberally with cooking spray and warm over medium heat on the hob. 

I use a Dutch Oven. It’s a big casserole, so you’ll need something big. 

Step Two

Season the chicken with salt and pepper. 

Season Three

Fry the chicken for around 5 minutes on each side until brown.

If you prefer, you can brown the chicken in the oven while preparing the other ingredients. I do this regularly. But it does mean that it’s not a one-pot dinner anymore!

cooked chicken breasts in white bowl.

Step Four

Remove from the pan and set to one side.

Step Five

Melt the butter in the same dish. Make sure you scrape the bottom of the dish if there’s any stuck chicken.

Step Six

Add the leeks and fry for 10 minutes until soft, stirring often. During this time, most of the rounds will break up; if some don’t, don’t worry about it. 

cooked leeks in cast iron dish.

Step Seven

Pour in the wine and simmer for 3 minutes, stirring often. If you don’t want to use wine, skip this bit. 

Step Eight

Add the mushrooms, carrots, and shallots.

chantaney carrots, shallots, mushrooms and leeks in cast iron dish.

Step Nine

Return the chicken to the pan. 

Step Ten

Pour in the stock and cream, retaining about 50 ml of stock. 

chicken breasts, vegetables and sauce in cast iron dish.

Step Eleven

Add water to cover all of the ingredients if needed. I tend to need to add a good cup.

Step Twelve

Add the tarragon and a pinch of freshly ground black pepper. 

Step Thirteen

Stir well and bring to a simmer. 

Step Fourteen

Reduce the temperature if needed to maintain a steady simmer. 

Step Fifteen

Add the mustard and cornflour to the stock and whisk together well.

Step Sixteen

Pour this mixture into the casserole and stir well. 

cooking chicken and leek casserole in cast iron dish.

Step Seventeen

Simmer for 45 minutes until the sauce has thickened and the carrots are cooked.

Serve your Leek and chicken casserole straight away.

Top Tips

Chicken and leek casserole recipe is really easy, and there are plenty of tips above. 

If after 45 minutes it’s still watery, cook for a little longer. If it’s thick much sooner, add a cup of water. 

chicken and leek casserole in cast iron dish with serving spoon. Bowls of potatoes and peas on table.

Serving Suggestions

Chicken casserole with leeks is just chicken and veg, so I like to add a carb. 

We often serve with boiled baby potatoes or crusty bread. 

You could serve it with things like mashed potatoes or just on its own straight from the cooking dish. 

Variations

When you make this recipe for chicken and leek casserole, there are a few things that you could do differently.

Add Bacon

Chicken and bacon are an excellent combination. Leek and bacon is an excellent combination. So, adding bacon works well. 

Add it to the leeks and fry until browned before adding the rest of the ingredients. 

Skip the Wine

If you prefer not to cook with wine, you can skip it entirely and replace it with stock. You will lose a little flavour, though. 

served portion of chicken and leek casserole in bowl with baby potatoes. cooking dish in the background.

Skip with Carrots

As I said, the original recipe didn’t have carrots, and you can skip them if you want to. 

Chop the Shallots

In the original recipe, I also diced the shallots, which you can do if you want to. Just soften them with the leeks. I like them in big chunks, though. 

Dice the Chicken

I love a chicken stew with whole chicken breasts. You could dice them if you prefer, though. 

Dice raw, and follow this recipe as it is.

close up of chicken casserole with leeks in cast iron dish.

Leftovers

Leftover Chicken leek casserole can be reheated in the hob and eaten with bread to mop up the sauce the next day. 

Add extra stock or water if needed and simmer for 15 minutes until the chicken is piping hot in the middle. 

I recommend using a meat thermometer if you have one. 

Storage 

Disclaimer: While I aim to be as accurate as possible, any advice in this post, including but not limited to, cooking times, quantities, nutritional information and storage and freezing guidance is based on my own experience. Please use your own skills, knowledge and judgement, and get up to date food safety information. 

If you want to save leftovers, remove them from the cooking pan and place them in a clean tub or bowl on the side to cool quickly. 

Cover and place in the fridge as soon as they are cool (don’t leave them out for more than two hours). 

Eat the next day. 

FAQ

Can You Brown Chicken in the Oven?

Yes, I often brown chicken in the oven.

Can You Make Chicken and leek Casserole without Cream?

Yes, you can reduce the cream or skip it entirely. You can also swap for creme fraiche.

Can You Put Raw Chicken in a Casserole?

You can, as long as it simmers long enough to cook through. Use a meat thermometer to check. I do recommend browning first, though. It looks nicer, is safer, and helps retain its flavour.

Do You Need to Cook Vegetables Before You Put Them in a Casserole?

No, vegetables will usually cook in a casserole.

Other Recipes 

If you like this Chicken and leek stew, you might also like:

Recipe Card

Chicken breast in leek sauce with carrots and new potatoes in white bowl with fork.

Chicken and Leek Casserole

Author NameDonna
Indulge in the irresistible flavours of a chicken and leek casserole featuring tender chicken, aromatic leeks, and a creamy, flavourful sauce. This comforting dish is perfect for a cosy family midweek dinner.
Prep Time 30 minutes
Cook Time 45 minutes
Total Time 1 hour 15 minutes
Course Dinner
Cuisine British
Servings 4 People
Calories 552 kcal

Ingredients
  

  • Cooking Spray
  • 4 Chicken Breasts
  • Pinch Salt and pepper
  • 1 Tablespoon Butter
  • 2 Leeks (Sliced)
  • 200 ml White Wine
  • 400 g Shallots (Top and Bottomed and Peeled)
  • 500 g Chantenay Carrots (Top and Bottomed and Scrubbed)
  • 200 g Button Mushrooms (Big ones chopped in half)
  • 2 Tablespoons Dried Tarragon
  • 500 ml Chicken Stock
  • 100 ml Double Cream
  • 1 Tablespoon Wholegrain Mustard
  • 2 Tablespoons Cornflour

Instructions
 

  • Spray a flameproof dish or pan liberally with cooking spray and warm over medium heat on the hob.
  • Season the chicken with salt and pepper.
  • Fry the chicken for around 5 minutes on each side until brown.
  • Remove from the pan and set to one side.
  • Melt the butter in the same pan.
  • Add the leeks and fry for 10 minutes until soft, stirring often.
  • Pour in the wine and simmer for 3 minutes, stirring often.
  • Add the mushrooms, carrots, and shallots.
  • Return the chicken to the pan.
  • Pour in the stock and cream, retaining about 50 ml of stock.
  • Add water to cover all of the ingredients if needed.
  • Add the tarragon and a pinch of freshly ground black pepper.
  • Stir well and bring to a simmer.
  • Reduce the temperature if needed to maintain a steady simmer.
  • Add the mustard and cornflour to the stock and whisk together well.
  • Pour this mixture into the casserole and stir well.
  • Simmer for 45 minutes until the sauce has thickened and the carrots are cooked.

Notes

  • Read the post above for more tips and advice.

Any nutritional information is given as a general guide only and may not be accurate. The information is provided using an online calculator and is specific to my ingredients. Please make your own calculations if you want precise information.

Keyword casserole, chicken recipes, leek, midweek meal recipes

Save this recipe for later!

Photo of author
Author
Donna Dundas
Donna Dundas is an experienced family food blogger who has been creating easy and wholesome recipes for over 10 years. Her blog is a must-read for anyone looking for filling and delicious recipe ideas, that reduce waste and minimise stress.

Leave a comment

Recipe Rating