How To Thicken Lemon Curd for Cake Pie Filling (With a Recipe)

lemon curd cake pie filling

Lemon curd is a versatile ingredient that can be used in a variety of desserts. It can be used as a filling for pies and cakes, or as a topping for ice cream or pancakes. 

The problem with lemon curd is that it can be too thin and runny, making it difficult to use as a filling. This can be rectified by cooking the lemon curd longer, but this will result in a product that is too thick and sticky. Making a thicker lemon curd is easy by using just a few simple ingredients. 

This article will show you how to thicken lemon curd so that it can be used for pie and cake fillings. In addition to that, you will get a recipe of Lemon Cake With Lemon Curd Filling

Are Lemon Curd and Lemon Pie Cake Filling Different Things?

Lemon curd and lemon pie filling are both tart and sweet. They are two popular citrusy desserts. Though they both contain lemon, there are some key differences between the two.

Lemon curd is made with fresh lemons, while lemon pie filling is made with lemon juice and zest. Lemon curd is also cooked on the stovetop, while lemon pie filling is baked in the oven.

Lemon curd has a silky smooth texture, while lemon pie filling is more thick and custard-like. Lemon curd is also tart and tangy, while lemon pie filling is sweet and mellow.

So, which one should you choose? It all depends on what can lemon curd be used for and your taste preferences. If you like tart and tangy desserts, go for lemon curd. If you prefer something sweet and mellow, go for lemon pie filling. 

How Thick Should Lemon Curd Be?

There is no right or wrong answer when it comes to the thickness of lemon curd. It all depends on your personal preference. 

If you like your lemon curd thick and creamy, then you will want to cook it for a longer period of time. If you prefer it to be thinner and more spreadable, then you will want to cook it for a shorter period of time.

The best way to find out how thick should lemon curd be is to experiment with different cooking times until you find the perfect consistency for you.

So go ahead and experiment with the cooking time until you find the perfect lemon curd for your palate! 

What Makes the Perfect Lemon Curd?

While it’s relatively easy to make lemon curd at home, there are a few things you can do to ensure your lemon curd is perfect.

What makes the perfect lemon curd? Many factors go into making the perfect lemon curd. The ratio of eggs to yolks to sugar to butter to lemon juice is key. Getting this ratio just right results in a smooth, creamy, and thick lemon curd that is bursting with flavor.

In addition to using fresh lemon juice, you can add more lemon flavor by zesting the lemons before you juice them. Be sure to use a fine mesh strainer to remove any bits of zest or pulp from the lemon curd before spooning it into jars or serving it over scones or shortbread.

Finally, don’t be afraid to experiment with other citrus fruits. Lime curd is a refreshing twist on classic lemon curd, while blood orange curd has a beautiful color and slightly different flavor profile.

How Much Sugar and Butter Should You Put in a Lemon Curd?

Like we mentioned above, the key to making the perfect lemon curd for cake filling is the ratio of ingredients. Sugar and butter are the main components of lemon curd’s raw materials. Finding the perfect ratio is not difficult, just needs more practice and knowing the taste of lemon curd you like.

Here are a few tips to help you get the perfect balance of sweetness and richness in your lemon curd:

  • Start by using 1/2 cup of sugar for every 1 cup of lemon juice. This will give you a nicely balanced sweet and tart flavor.
  • Add 1/2 cup of butter for every 1 cup of lemon juice. This will give your lemon curd a lovely creamy texture.
  • If you want your lemon curd to be extra rich and smooth, add an additional 1/4 cup of butter. 

What To Do if Lemon Curd Doesn’t Thicken?

If your lemon curd doesn’t seem to be thickening, don’t worry! There are a few things you can do to fix the problem. 

  • Make sure you’re using enough curd. If your mixture is too light, it won’t thicken no matter what you do. 
  • Ensure that you’ve cooked the curd long enough. It should be bubbling and thick before you take it off the heat. If it’s still runny, cook it for a few minutes longer.
  • Cook the lemon curd on low heat. If it’s too hot, the curd will never thicken. 
  • Try cooling the lemon curd. Sometimes all it needs is a little time to set. Lemon curd will thicken as it cools, so if yours is still runny after cooking, let it sit for an hour or so before using.
  • Finally, run a spoon along the back of the pan. If the spoon leaves a trail that doesn’t immediately fill in, your curd is thick enough!
  • If anything else fails, you can add a bit of cornstarch to help thicken the lemon curd.

How To Preserve and Store Lemon Curd?

If you’ve ever made homemade lemon curd, you know that it doesn’t last forever. In fact, it only stays fresh for about a week. After that, it starts to lose its flavor and texture. 

But there are a few ways you can extend the shelf life of your lemon curd.

Put in the refrigerator

First, make sure the lemon curd is completely cooled before storing it. Place it in an airtight container and store it in the fridge for up to two weeks. When you’re ready to use it, thaw the lemon curd in the refrigerator overnight.

Freeze it

If you want to extend its shelf life, lemon curd can be frozen for up to 3 months. When freezing, be sure to use an airtight freezer-safe container. To thaw, simply place the container of lemon curd in the fridge overnight.


Lemon curd is a delicious and versatile topping for cakes, cake filling, pies, and other desserts. But sometimes it can be too thin and runny. If you want to thicken your lemon curd, there are a few easy methods you can try.

In conclusion, thickening lemon curd is a simple process that can be done in a few minutes. With just a few ingredients, you can have delicious, tart, and sweet pie filling that will complement any cake or pie recipe. Give it a try the next time you need to add some zing to your dessert! 

Similar Posts