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    Home ยป Starter, snack and condiment recipes

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    Leek and Cheese Sauce

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    This leek and cheese sauce is deliciously creamy, packed with flavour and flecked with buttery leeks and sweet peas. Serve with your next roast dinner!

    To make it, you'll start my melting butter in a pan, then adding leeks and garlic and sweating down until soft.

    Next, you'll add flour and more butter, stirring and heating to create what is essentially a 'roux', so that when you add your milk, it will thicken beautifully.

    Once thickened, you'll add a generous handful of grated cheddar and stir until melted before finally added some frozen peas, which cook in no time in the heat of the sauce without losing their vibrant colour.

    This is such a simple sauce, you'll be making it for all sort of occasions. Try it with your weekend roast, with chicken, with potatoes and even with fish - it's heaven!

    Read on for the full recipe with detailed instructions and a helpful photograph for every step. And if you have any questions, just leave me a comment. Enjoy!

    Ingredients

    • 25 g (0.9 oz) salted butter
    • 275 g (9.7 oz) leeks 2 medium, trimmed and sliced
    • 2 cloves garlic minced
    • 400 ml (13.5 floz) whole milk
    • 25 g (0.9 oz) plain white flour (all purpose flour)
    • 100 g (3.5 oz) mature cheddar cheese (sharp cheddar) grated
    • 100 g (3.5 oz) petit pois frozen fresh
    • salt and black pepper

    Equipment

    • Weighing scales
    • Kitchen knife
    • Chopping board
    • Grater
    • Large saucepan
    • Whisk
    • Wooden spoon

    Instructions

    Melt half butter in a large pan over a medium-low heat.

    Add the leeks, garlic and a pinch of salt and pepper.

    Sweat for 5-7 minutes until soft.

    Add the flour and remaining butter to the pan.

    Stir to coat the leeks.

    Gradually add the milk while whisking over a low heat.

    Continue to heat until it thickens. Taste to make sure the flour has cooked out.

    Add the cheese.

    Whisk through gently until melted. 

    Stir in the peas.

    Cook for a a couple of minutes to heat through.

    Season, if needed, and serve.

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    4.5 from 2 votes

    Leek and Cheese Sauce Recipe

    This leek and cheese sauce is deliciously creamy, packed with flavour and flecked with buttery leeks and sweet peas. Serve with your next roast dinner!
    Prep Time5 minutes mins
    Cook Time10 minutes mins
    Total Time15 minutes mins
    Course: Side Dish
    Cuisine: British
    Diet: Vegetarian
    Servings: 6 servings
    Author: Emily Leary

    Ingredients

    • 25 g (0.9 oz) salted butter
    • 275 g (9.7 oz) leeks 2 medium, trimmed and sliced
    • 2 cloves garlic minced
    • 400 ml (13.5 floz) whole milk
    • 25 g (0.9 oz) plain white flour (all purpose flour)
    • 100 g (3.5 oz) mature cheddar cheese (sharp cheddar) grated
    • 100 g (3.5 oz) petit pois frozen fresh
    • salt and black pepper

    Equipment

    • Weighing scales
    • Kitchen knife
    • Chopping board
    • Grater
    • Large saucepan
    • Whisk
    • Wooden spoon

    Instructions

    • Melt half butter in a large pan over a medium-low heat.
    • Add the leeks, garlic and a pinch of salt and pepper and sweat for 5-7 minutes until soft.
    • Add the flour and remaining butter to the pan, stir to coat the leeks.
    • Gradually add the milk while whisking over a low heat.
    • Continue to heat until it thickens. Taste to make sure the flour has cooked out.
    • Add the cheese and whisk through gently until melted.
    • Stir in the peas and cook for a a couple of minutes to heat through.
    • Season, if needed, and serve.

    Nutrition

    Calories: 197kcal | Carbohydrates: 16g | Protein: 8g | Fat: 11g | Saturated Fat: 7g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.1g | Cholesterol: 34mg | Sodium: 172mg | Potassium: 249mg | Fiber: 2g | Sugar: 6g | Vitamin A: 1274IU | Vitamin C: 12mg | Calcium: 237mg | Iron: 1mg
    * Note: nutritional information is estimated, based on publicly available data. Nutrient values may vary from those published. Information on this website should not be taken as medical advice. Cuisines identify the primary region of inspiration for a dish.
    Tried this recipe?Snap a pic and tag @amummytoo on Instagram or tag @EmilyLearyCooks on Twitter. I can't wait to see your posts!

    Pin this leek and cheese sauce recipe

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    Cheesy Leek and Potato Pie Recipe
    This is a gorgeous potato, leek and cheese pie with a flaky pastry top. It's quick to make, ultra comforting, and the cheese sauce is extra tasty and simple thanks to melty, tasty Primula Cheese.
    Get the recipe
    Gluten Free Vegetarian Pie Recipe
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    Get the recipe

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