How to Make Cheese Sauce in the Microwave



Time Needed






  • Microwave Cheese Sauce
  • 1 tbsp
  • 1 tbsp
  • 1 cup
  • 1 cup
    Cheese (grated)
  • Onion Sauce
  • 1
  • 1 tbsp
  • 1 tbsp
  • 1/2 cup
  • 1
    Cup Water

Nutrition Information

Qty per
321g serve
Qty per
Energy 829cal 258cal
Protein 2.42g 0.75g
Fat (total) 15.9g 5g
 – saturated 9.7g 3g
Carbohydrate 14.1g 4.4g
 – sugars 1.82g 0.57g
Dietary Fibre 0.76g 0.24g
Sodium 174mg 54mg

Please Note – Nutritional information is provided as a guide only and may not be accurate.

Here’s how to make cheese sauce in the microwave!

Cheese sauce is great for those nights when you’re in a rush to cook dinner. Your family will think you slaved away for hours to make this gorgeous sauce.  It’s cheesy enough to be the base sauce for Macaroni Cheese, or as a Bechamel sauce for Lasagne.

This is the more traditional ‘French’ version where you make a roux sauce first.  But making cheese sauce in the microwave is so much easier than on the stove top, and you are a lot less likely to burn it.  I use a large glass jug to make mine – do this or find a microwave proof container.

What Can You Use This Microwave Cheese Sauce For?

The following recipes can use this microwave cheese sauce easily!

How to Make Cheese Sauce in the Microwave

We have also included an Onion Sauce recipe for you to try.


  1. In a microwave jug melt the butter until frothy, add the flour and salt and whisk.

  2. Microwave for 20 seconds to cook out the flour.

  3. Add a small amount of milk and whisk until you get a creamy even consistency.  Whisk in the remaining milk and cheese.

  4. Microwave for 30 seconds and whisk, repeat until nice and thick.

  5. In a small saucepan, boil a cup of water and the onion together until the onion is cooked through and soft.

  6. Add the butter and the milk and cook for another few minutes.

  7. In a small cup make a paste with the cornflour and a tiny amount of water.  Add to onion mixture and cook on low until the desired consistency.

Recipe Hints and Tips:

  • Microwave Cheese Sauce is not suitable for freezing.
  • If the mixture gets too thick whilst standing, add a bit more milk and whisk.
  • Makes a perfect cheese sauce for lasagna or pasta!

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