Preheat the Oven: Begin by preheating your oven to 180 °C (350 °F).
Blend Ingredients: In a mixing bowl, combine the condensed milk, whole milk, coconut milk, sugar, eggs, and melted butter. Blend until the mixture is smooth and free of lumps.
Prepare the Baking Mold: Grease and flour a suitable baking mold to ensure easy removal after baking.
Pour and Bake: Pour the creamy mixture into the prepared mold and bake for approximately 40-50 minutes, or until the top is golden and a toothpick inserted in the center comes out clean.
Cool and Serve: Allow the cake to cool completely before unmolding it. Slice and serve to enjoy!