In a medium saucepan, bring the vegetable broth to a boil. Add the quinoa, reduce the heat to low, cover, and simmer for 15 minutes or until the quinoa is fluffy and the liquid is absorbed.
While the quinoa cooks, heat olive oil in a large skillet over medium heat. Add the diced red onion and garlic, sautéing for 2-3 minutes until fragrant and the onion is translucent.
Add the shrimp to the skillet. Sprinkle the Cajun seasoning over the shrimp and stir to coat. Cook for about 3-4 minutes, or until shrimp turn pink and opaque.
Incorporate the diced red and yellow bell peppers and corn into the skillet, cooking for an additional 3-5 minutes until the peppers are tender.
Fluff the cooked quinoa with a fork and gently fold it into the skillet with the shrimp and vegetables, ensuring everything is well combined. Season with salt and pepper to taste.
Remove from heat, and garnish with sliced green onions and chopped parsley before serving.
Notes
Feel free to adjust the Cajun seasoning to your taste.