Lemon butter (also known as lemon curd) isn’t quite the go-to spread we reach for when topping our toast like it used to be, but I think it should have a 2025+ revival! This butter is like breakfast and dessert all rolled into one – tart and yet sweet – and so deliciously tangy on the tongue. Spread it over toast, bread rolls or pancakes, or use it as a dessert filling, it’s up to you. Best of all, it only takes 20 minutes to make… in the microwave!
How to make microwaved lemon butter: key tips
Using just 4 ingredients and the microwave, this butter is quick and easy to make. Simply start by whisking the butter, sugar and fresh lemon juice in a microwave-safe bowl before adding the eggs. Some lemon butter recipes involve whisking the butter into the heated mixture, which runs the risk of the mixture splitting. This unique method of creaming the butter, sugar and eggs ensures the lemon butter stays emulsified when thickening in the microwave.
After microwaving for a minute, it’s really important to give the mixture a good whip with a whisk, as well as after another 2 minutes in the microwave and again at the end. If you were cooking lemon butter on the stovetop, you would whisk constantly to help prevent the eggs scrambling in the mixture and the fat (butter) and acid (lemon juice) from splitting. You want that lovely smooth glass-like emulsion that lemon butter is known for and whisking is the key.
When your lemon butter is ready, the mixture should coat the back of a spoon and when you run a finger down the back of the spoon a distinct line will form. If it’s not quite thick enough, pop it back in the microwave in 30-second bursts (whisking in between) until you’re satisfied.
Key ingredient in this microwaved lemon butter recipe
Fresh lemon juice makes this butter zing! In Australia, Meyer lemons are the sweetest and are the best to create an elegant smooth butter. Lemonade lemons will also work well.
When life gives you lemons, you can make all kinds of wonderful things! Here are some delicious ways to use up lemons. And if you can’t get enough of fruity curds, try these 13 fruit curds to enhance your desserts.
This recipe was originally submitted by DI1808, a member of the Australia’s Best Recipe community. Introduction and additional recipe notes by Natasha Shaw.
Ingredients
- 90 g butter melted
- 1 1/4 cup caster sugar
- 2 lemon juiced
- 3 egg beaten
Method
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Step 1Hand whisk together butter, sugar and lemon juice in a microwave bowl.
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Step 2Add eggs and whisk together well. Microwave on high for 1 minute.
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Step 3Whisk mixture well then cook for a further 3 minutes, whisking again after 2 minutes.
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Step 4Whisk mixture and then allow to cool.
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Step 5Pour into sterilised jars.
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Step 6Refrigerate when cool.
Recipe Notes
What if I don’t like my lemon butter too sweet?
Caster sugar in this lemon butter recipe dissolves easily into the egg and butter mixture and can be quite sweet. If you prefer a tarter curd, cut the sugar back by 1/4 cup.
Can I adapt this microwaved lemon butter recipe?
Sure! Make a passionfruit lemon butter. After cooking in the microwave, whisk in the pulp of 1 or 2 passionfruit, before pouring the mixture into jars.
How do I store microwaved lemon butter?
Unopened sterilised jars can be kept in the fridge for up to 2 months. Once opened, keep chilled and consume within 2 weeks. You can also freeze lemon butter for up to 3 months.
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