Triple Berry Cake Filling- cakes need a great filling to balance out the flavors, add texture, create some visual appeal, etc. This recipe adds a great pop of color and a bright, fruity flavor.
This cake filling is easy to make and sets up nicely so it isn’t spilling out of your cake or making your layers slide around. I pipe a layer of buttercream around the edge of each layer before adding the filling, to prevent any staining of my final buttercream layer. See the above photo for reference.
I love to use frozen berries in my cake fillings. It’s easy to keep them on hand, and they are great for mashing up, like in this filling. For this recipe, I use the triple berry blend from Costco. I always have some in my freezer, so they are super convenient for me.
To make this filling you cook the berries down and mash them, then strain them to use the juices and get rid of the pulp and seeds. I love raspberries and blackberries but I’m not a fan of a bunch of seeds. So we strain most of them out. Then we cook the juices and thicken them with some corn starch, which yields a nice, thick, glossy filling.
You can use this filling in any cake you want. It is pictured here in my Grapefruit Cake. Need ideas for a cake? Click HERE!
Ingredients
- 2 1/2 cups berries- I use the frozen triple berry blend from Costco
- 1/2 cup water
- 1/2 cup sugar
- 1 tsp lemon juice
- 2 Tbs corn starch
Instructions
- Add 2 cups of berries, 1/4 cup water, the sugar, and lemon juice to a medium sized pot and heat over medium heat.
- As the berries heat, stir them occasionally, and then mash them with a potato masher. Let them cook while stirring for about 5-7 minutes, the berries should release their juices and the mixture should be quite liquidy.
- Remove the pan from the heat and push the mixture through a sieve to strain out as much juice and pulp as possible, while leaving the seeds behind.
- Add the juices back to the pot and return to a medium-low heat. In a small bowl mix the remaining 1/4 cup water with the corn starch- stir until smooth. Add the corn starch mixture to the pot and stir . The mixture will get thick and turn glossy- that's when it is done.
- Let the filling cool completely before adding to your cake layers. Store extra filling in a air tight container, or freeze it.
