This strawberry filling is all you need to elevate your cake to the next level. Made with real fresh or thawed frozen strawberries, this strawberry cake filling gives your favorite chocolate, lemon and vanilla cakes and cupcakes a sweet surprise! Not big on strawberries? Swap in raspberries or pineapples for an amazing fruity cake filling that will give you a sweet taste of summer anytime of year. Simple to make, this recipe is all you need liven up your treats in no time.