Strawberry Cake Filling

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Use fresh berries to make a special filling for cakes, cupcakes, and more.

Southern Living Strawberry Cake Filling inside a slice of cake served with a cup of coffee
Photo:

Will Dickey; Food Stylist: Ruth Blackburn

Active Time:
20 mins
Total Time:
9 hrs 50 mins
Yield:
4 cups

When fresh strawberries are plentiful, use it as an excuse to make strawberry cake filling. This simple 3-ingredient fruit filling is easy to make, and it can elevate even layers of cake made from a boxed mix to special dessert status.

You'll need to plan ahead if you want to make this strawberry cake filling. It does need several hours to thicken and chill. But otherwise, this couldn't be simpler to make. Here, learn how to make strawberry cake filling, and get ideas on how to use it.

Ingredients for Strawberry Cake Filling

Strawberry filling for cake requires just three ingredients. These are:

  • Fresh strawberries: We prefer these over frozen because they release less moisture. If you have to use frozen, let them thaw and drain them well first.
  • Sugar: Sugar helps draw out the berries' natural sweetness and also makes a simple syrup that will help to naturally thicken the strawberry filling when it's boiled.
  • Gelatin: Other recipes for strawberry cake filling often call for cornstarch, but if it's not boiled correctly, cornstarch can make the filling gritty. Gelatin, on the other hand, dissolves quickly, and it helps the filling stay together once it's between the cake layers.
Southern Living Strawberry Cake Filling ingredients

Will Dickey; Food Stylist: Ruth Blackburn

How To Make Strawberry Cake Filling

Strawberry cake filling isn't time consuming, but it does require some planning. Once it's made, it needs to chill for 8 hours so the gelatin will thicken properly.

Here, a brief recap of how to make strawberry cake filling. The full recipe is below:

  • Step 1: Macerate the berries. Combine the sugar and fresh strawberries. Let them sit for about 30 minutes for the sugar to draw out the berries' natural juices.
  • Step 2: Boil berry mixture. Bring the sugar and strawberries to a boil, and cook for 5 minutes.
  • Step 3: Add gelatin. Take the boiling berries off the heat, and stir in the gelatin. Mix well.
  • Step 4: Chill several hours. Let the gelatin-berry mix sit in the fridge for 8 hours to thicken. Then it's ready to use.

Ways To Use Strawberry Cake Filling

Obviously this strawberry filling is meant for a cake. The fruity filling will be delicious used between the layers of a vanilla or strawberry cake. It would even be delicious used with a chocolate cake.

Beyond that, there are many other ways to use this filling:

  • Biscuits
  • Waffles
  • Crepes
  • In cupcakes
  • Cheesecake
  • Ice cream
  • Trifles
strawberry cake filling on biscuits

Will Dickey; Food Stylist: Ruth Blackburn

How To Store Strawberry Cake Filling

It's a good idea to plan to make this strawberry cake filling before you need to use it. After all, it does need to chill for 8 hours. Once it's finished chilling, you can leave the strawberry filling in the bowl with plastic wrap until you need it.

But if it'll be more than a few hours, consider transferring the strawberry filling to an airtight food container. It will last in the fridge for 3 to 5 days, but it may get a bit more watery as it sits. (The berries continue to release moisture.) You can drain some of the excess liquid off before you plan to use it.

Don't freeze strawberry cake filling. It will be too watery once it's thawed.

How Much Will This Recipe Make?

This recipe for strawberry cake filling makes 4 cups. That's enough for a three-layer cake. It will also make enough to fill cupcakes or top a cheescake.

If you have leftovers, use it as a topper for ice cream, brownies, or waffles. It would also be great in a last-minute berry trifle: Chop up store-bought angel food cake, drizzle it with berries, and add whipped cream.

What Cakes Go Well With Strawberry Filling?

If you need a filling for a cake, this strawberry filling is a great choice. Almost any cake could benefit from having this fruity filling. We especially like these recipes:

Ingredients

  • 4 cups mashed fresh strawberries

  • 2 1/2 cups granulated sugar

  • 1 (3-oz.) package strawberry-flavored gelatin

Directions

  1. Combine berries and sugar:

    Stir together strawberries and sugar in a bowl; let stand 30 minutes.

    Southern Living Strawberry Cake Filling stirring together the sugar and strawberries

    Will Dickey; Food Stylist: Ruth Blackburn

  2. Boil berry mixture:

    Bring strawberry mixture to a boil over medium heat; boil 5 minutes.

    Southern Living Strawberry Cake Filling in the saucepan

    Will Dickey; Food Stylist: Ruth Blackburn

  3. Add gelatin and chill:

    Remove from heat, and stir in gelatin until dissolved; cool completely (about 1 hour). Cover and chill 8 hours.

    Southern Living Strawberry Cake Filling after cooking

    Will Dickey; Food Stylist: Ruth Blackburn

Frequently Asked Questions

  • Does a cake with fruit filling need to be refrigerated?

    Yes, any cake with a perishable fruit filling should be refrigerated. Wrap the cake in plastic wrap, or cover with a cake dome, and store it in the refrigerator.

  • How do you keep strawberry filling from making the cake soggy?

    A thin layer of frosting between the cake and the strawberry filling will help block moisture from seeping into the cake below. The frosting acts as a barrier.


    If the cake you're making will be eaten quickly, this step may not be necessary. But if you know you'll have leftovers, consider the frosting trick to prevent a soggy cake in the coming days.

  • What is strawberry cake filling made of?

    This strawberry cake filling is made with fresh strawberries, sugar, and strawberry-flavored gelatin.

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