Place a non-stick frying pan on the heat and add the olive oil and sliced onion and sauté until the onions are softened.
Prepare your scramble mix by adding chickpea flour, milk, nutritional yeast, turmeric, dijon mustard, garlic powder and onion powder to a large bowl and whisk everything together well.
Pour mixture over the onions and cook until the mixture begins to firm up like a pancake. Then start breaking it up with your spatula and scrambling and flipping the mix until the whole scramble is cooked and no longer wet.
Arrange the scramble on bread and top with tomatoes. Enjoy!