Mix all the ingredients together for the omelette and let sit for 5 minutes.
Heat a non-stick or cast iron pan on medium heat with a teaspoon of grapeseed oil.
Pour the mixture onto the pan and cook until it's bubbling up and it's getting firmer. One way to make sure whether it's ready to flip is to gently shake the pain to see if it moves around easily. if it does, then it's ready to flip!
Cook the other side for another 5 minutes or until fully cooked. Enjoy!