1 1/2cupbuttermilkdivided 1 cup (for the batter) and 1/2 cup (for the sauce)
15ouncescoconut milkrich and creamy
1/2cupsweetened condensed milk
8ouncesCool Whip thawed
1cupsweetened shredded coconut
Instructions
Preheat the oven to 350°F and butter a 9x13-inch baking dish.
In a large mixing bowl, combine the white cake mix, eggs, and 1 cup buttermilk. Beat until smooth and well combined.
Pour the batter into the prepared baking dish and spread it evenly.
Bake for 25 minutes, checking at 20. The cake is done when the top is golden and a toothpick comes out clean.
While the cake bakes, make the coconut soak. In a medium bowl, whisk together the coconut milk, sweetened condensed milk, and the remaining 1/2 cup buttermilk until completely smooth.
As soon as the cake comes out of the oven and is still warm, use a fork to poke holes all over the surface, going most of the way down.
Slowly pour the coconut mixture over the warm cake in a few passes, letting it seep into the holes before adding more.
Cover the cake and refrigerate at least 2 hours, or overnight.
When ready to serve, spread the thawed Cool Whip evenly over the top of the chilled cake.
Sprinkle generously with sweetened shredded coconut. Toast it first for more flavor.
Slice and serve cold.
Notes
How to StoreCover tightly with plastic wrap or store in an airtight container in the refrigerator for up to 4 days. It gets even better the next day as the soak continues to work through the cake. Serve chilled.Make AheadBake, soak, and chill up to 2 days ahead. Add the Cool Whip and coconut the day you serve.FreezingFreeze the soaked cake before topping, wrapped well, for up to 2 months. Thaw overnight in the fridge, then top before serving.Coconut SwapFor a sweeter, richer cake, use a 15 ounce can of cream of coconut in place of the coconut milk and reduce the sweetened condensed milk to 1/3 cup.Full tips and variations are in the coconut poke cake post.