Line the baking pan with aluminum foil or parchment paper and lightly coat with nonstick spray.
In a large heat-resistant mixing bowl, combine the peanut butter, chocolate chips, and vanilla extract.
In a saucepan, mix together the coconut milk and sugar.
Bring to a full boil, ensuring large rolling bubbles form.
Boil hard for exactly 1 minute.
Pour the hot coconut mixture into the peanut butter mixture and stir vigorously until well combined and the chocolate begins to melt.
The chocolate may not completely melt, which is acceptable as it will marble with the peanut butter as it hardens.
Immediately pour the mixture into the prepared pan and let it cool and harden completely, about 1 hour.
Once set, cut into small squares and enjoy.
Notes / Tips / Wine Advice:
Serving Tip:For an extra indulgent treat, serve these fudge squares atop a scoop of vanilla ice cream.Wine Advice:Pair with a glass of chilled dessert wine, such as a late-harvest Riesling, to complement the rich flavors of the fudge.