Add all ingredients to a medium pot on the stove.
Turn to the heat to medium and let everything melt together, whisking constantly while the coconut cream and butter melt.
Once everything is melted, give it a really good whisk to ensure the cornstarch is mixed throughout and no clumps form.
Bring to a boil and keep at a low boil for about 5-10 minutes, whisking occasionally. It will get really bubbly, this is good! The longer you let it simmer, the more flavorful it will get. Just careful not to let it burn.
Remove from heat and let cool. It will thicken quite a bit as it cools, but you can pop it in the fridge or freezer right away if you need it to thicken faster.
Transfer to a glass jar and store in the fridge for up to 2 weeks. It will thicken quite a bit as it sits in the fridge, so just warm it up on the stove until it softens before serving, depending on what you're using it for!