In a large skillet, heat half the oil over medium high heat.
Add the quinoa to the pan and spread evenly. Don’t pile it up — you may have to cook in batches depending on how big your pan is.
Cook the quinoa for about 3 minutes, stir, and continue cooking until it is lightly browned. Turn off heat and transfer to plates or bowls for serving.
Wipe out the pan and add the remaining oil over medium high heat. Add the onions, mushrooms, and cabbage and cook until softened. Add the Italian seasoning, and vinegar. Stir and add to your quinoa.