In a medium saucepan, bring the vegetable broth to a boil. Add the rinsed quinoa, reduce the heat to low, and cover. Cook for about 15 minutes or until the quinoa is fluffy and the liquid is absorbed. Remove from heat and set aside.
In a large skillet, heat the olive oil over medium heat. Add the diced red onion and sauté for about 3-4 minutes or until softened.
Add the minced garlic and cook for an additional 1 minute, stirring constantly to avoid burning.
Stir in the diced red and yellow bell peppers and sauté for another 5 minutes until they begin to soften.
Add the cooked quinoa to the skillet, followed by the black beans, corn, and diced tomatoes (with their juices).
Sprinkle in the chili powder, cumin, smoked paprika, salt, and pepper. Stir well to combine all the ingredients and heat through for about 5-7 minutes.
Taste and adjust the seasoning if necessary.
Once everything is well-mixed and heated, remove from the heat.
Serve hot, garnished with slices of avocado, a sprinkle of fresh cilantro, and lime wedges on the side.
Notes
Feel free to customize the vegetables based on your preference.