First, prepare whatever filling you would like. I love sauteeing mushrooms and spinach! Set it aside.
Now, add all of the recipe ingredients, except for the oil, to a small bowl, and with a fork, whisk until smooth.
Place a large non-stick saute pan over medium heat. Once hot, evenly coat the pan with the oil.
Pour the omelette batter into the center of the pan, turn the heat down to medium-low, and either pick up the pan and gently tilt it around or use a small spoon to gently spread the top out, so the omelette is a little bigger and thinner.
If you're adding vegan cheese, add it to one-half side now, then place a lid on the pan and cook the omelette for about 2 minutes, or just until the top is mostly dry.
With a spatula, gently loosen the outer edges. Then top the one-half side where the vegan cheese is with your desired filling, and gently fold the opposite side onto the filling. Then I love topping it with fresh avocado and lots of hot sauce for added moisture, texture, and flavor! Enjoy!