Description

This easy strawberry cake filling recipe is a simple and delicious way to enhance your baked goods with fresh, naturally sweetened strawberries. Made with just a few ingredients including fresh strawberries, lemon juice, sugar, and cornstarch, this homemade filling cooks quickly on the stovetop to create a thick, flavorful topping that’s perfect for cakes, pastries, or even as a topping for yogurt or ice cream.

Ingredients

Scale

Strawberry Filling

3 cups strawberries, sliced in half
1 tablespoon lemon juice
1 teaspoon lemon zest (optional)
¼ cup granulated sugar
1 teaspoon cornstarch mixed with a little bit of water (cornstarch slurry)

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Instructions

Prepare the strawberries: Wash, hull, and chop the fresh strawberries, or use frozen ones if preferred. For a chunkier filling, keep the strawberry pieces larger.
Combine ingredients in saucepan: Place the strawberries, granulated sugar, lemon juice, and lemon zest (if using) into a medium saucepan. Heat over medium heat until the mixture starts to bubble and the strawberries release their juices.
Simmer the mixture: Reduce the heat to medium-low and let the mixture simmer for about 20 minutes. Stir occasionally to blend flavors properly and prevent the mixture from sticking to the bottom of the pan.
Prepare cornstarch slurry: While the strawberries simmer, in a small bowl, mix 1 teaspoon of cornstarch with a small amount of water until smooth to create a slurry.
Thicken the filling: Slowly add the cornstarch slurry to the strawberry mixture, stirring constantly to avoid lumps forming.
Cook until thickened: Continue cooking and stirring for several minutes until the filling thickens and coats the back of a spoon.
Cool the filling: Remove the saucepan from heat and allow the strawberry filling to cool completely. The filling will thicken further as it cools. Use immediately or store in an airtight container in the refrigerator for a few days.

Notes

For a smoother filling, you can mash the strawberries slightly during cooking or blend briefly after cooking.
Adjust sugar quantity based on the sweetness of your strawberries or personal preference.
The lemon zest is optional but adds a nice brightness to the flavor.
Store leftover filling in an airtight container in the refrigerator for up to 3–4 days.
This filling can also be frozen for up to 2 months; thaw before use.