Hello there. I understand how frustrating it is to lose a batch of heavy cream, especially when you are trying to stick to a budget and recreate a fond childhood memory.
To answer your question directly: no, unfortunately, there is no way to reverse butter back into whipped cream or liquid cream. Once the fat globules have completely clumped together and separated from the buttermilk, the emulsion is permanently broken.
However, do not throw it away! You have accidentally made fresh, delicious sweet cream butter. You can simply pour off the liquid, rinse the butter with cold water, and use it just like store-bought butter for toast, cooking, or baking. It will ensure your money and ingredients do not go to waste.
