In a blender or food processor, combine the soaked mung beans, nutritional yeast, tapioca starch, salt and all the spices, and non-dairy milk. Blend until you have a smooth batter. The consistency should be thick but pourable—similar to pancake batter. Add a bit more milk if needed to reach the right consistency.
Add vegan butter to pan and heat on medium heat. Pour the mung bean batter in the pan. Let it cook for about 5 minutes on the first side until the edges start to lift and the centre appears set.
Carefully flip the omelette using a spatula and cook for another 4-5 minutes on the other side until it's golden brown and firm. You may need to lower the heat slightly to avoid burning.
Add optional cooked veggies/ vegan cheese to top of omelette. Carefully fold in half.
Once your mung bean omelette is cooked through, slide it onto a plate. You can top it with fresh herbs, and a side of toast. Enjoy!