I haven't tried it with other sweeteners but I bet other liquid sweeteners like honey or agave would work well. (eatingbirdfood.com)
Filling 3/4 cup cashews — soaked for 4 hours 1 2/3 cup nut milk 1/2 cup agave syrup or other liquid sweetener of your choice 3/4 cup coconut oil 0.7 oz / 19g Irish moss — rinsed thoroughly and soaked in hot water for at least 10 minutes 1 tablespoon coconut sugar 3 cardamom pods — seeds crushed in a mortar and pestle 1 teaspoon ground cinnamon 1/2 teaspoon ground nutmeg 2 tablespoons poaching syrup (golubkakitchen.com)