Place bananas and dates in 11x7 Pyrex baking dish. Drizzle with vanilla and coconut oil. Bake at 375 for 35-45 minutes, until bananas begin to caramelize and smell fragrant - do not let burn. Place banana fixins and coconut milk in blender and puree until smooth. Place mixture in ice cream maker and freeze according to directions. Top with nuts, berries or sprinkles and serve.