Cook the quinoa according to package directions and set aside.
Heat olive oil in a large saucepan over medium heat. Add the yellow onions, green pepper, and celery. Cook, stirring occasionally, for 3 minutes, or until vegetables are softened slightly. Add the garlic, thyme, Creole seasoning, and red pepper flakes then continue cooking for an additional 30 seconds.
Add the kidney beans, and vegetable broth. Increase heat and bring to a boil, then reduce heat to low. Cover and simmer for 10 minutes, to heat through.
Stir in the cooked quinoa, adjust the seasoning to taste, and serve warm.