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Raspberry Filling For Cake

This vibrant raspberry filling features fresh or frozen raspberries, sweetened and thickened with a touch of cornstarch and sugar. It's a luscious blend of tart and sweet, perfect for adding a burst of fruity flavor to cakes and pastries.
Prep Time 5 minutes
Cook Time 15 minutes
Cooling Time 45 minutes
Total Time 1 hour 5 minutes
Course Condiments
Cuisine American
Servings 12 people
Calories 37 kcal

Equipment

  • Whisk
  • Spatula
  • Small saucepan
  • Heatproof container

Ingredients
  

  • 2 tbsp water
  • 1 tbsp lemon juice optional, but recommended for best flavor
  • ⅓  cup granulated sugar
  • 2 cups fresh or frozen raspberries
  • 2 tbsp cornstarch

Instructions
 

  • In a small saucepan, whisk together the granulated sugar and cornstarch until well blended.
  • Add raspberries, water, and lemon juice, stirring to combine all ingredients.
  • Set the heat to medium, being careful not to raise it higher, as slow heating ensures the sugar dissolves properly and the mixture thickens evenly.
  • Stir frequently as the raspberries release their juices and the mixture starts to bubble, which usually takes around 7 minutes.
  • Continue cooking for another 2 minutes, stirring constantly, until the sauce thickens.
  • Keep in mind, that it will further thicken as it cools, so avoid overcooking to prevent it from becoming too stiff.
  • Once done, transfer the mixture to a heat-safe container and let it cool to room temperature before using.
  • If not used immediately, refrigerate in an airtight container for up to a week.
  • To loosen after refrigeration, microwave for a few seconds until spreadable.

Notes

  • Adjust the sweetness by adding more or less sugar depending on your taste preference.
  • Use fresh raspberries for a brighter flavor, but frozen raspberries work well too.