Heat a skillet on medium high
Prepare the vegetables
Pour 1-2 tablespoons of olive oil onto skillet followed by sliced baby bella mushrooms, diced sweet peppers and baby spinach
Cook until peppers and mushrooms are tender and spinach is wilted then set aside
Heat another skillet on medium and spray with cooking spray
In a small bowl, whisk together the two whole eggs and three egg whites then pour onto the heated skillet then move the skillet around ensuring the entire surface is covered with the egg mixture
Gently pour the spinach, mushroom and pepper mixture over one half of the omelette
When the edges of the omelette begin to stiffen, slide a spatula under the half without vegetables and gently fold it over the half with the vegetables
Let cook for another 30 seconds to a minute then plate and serve