In a small heavy bottomed saucepan over medium heat, whisk together the coconut milk, palm sugar, and maple syrup. Bring to a boil and then reduce heat to medium-low and simmer, stirring occasionally, for 15 minutes and then remove from heat.Whisk in the coconut oil, vanilla, and sea salt.Allow the Caramel Sauce to cool for 20 minutes. A thin film will naturally form over the top of the sauce; this is perfectly normal. Simply give the sauce a good whisk before pouring it into a glass airtight container (I use a canning jar). The sauce will continue to thicken (although not much) while it cools.Store in the refrigerator. Can be served warm or cold. Use within 5-7 days.