In a medium saucepan, combine quinoa and water. Bring to a boil, then reduce heat to low, cover, and simmer for 15 minutes or until quinoa is cooked.
In a large mixing bowl, combine cooked quinoa, black beans, corn, salsa, 1 cup of shredded cheese, cumin, chili powder, salt, and black pepper. Mix well.
Transfer the mixture to a greased baking dish. Sprinkle the remaining 1 cup of shredded cheese on top.
Bake in the preheated oven for 30 minutes or until the cheese is bubbly and golden brown.
Let it cool for a few minutes before serving. Enjoy!
Notes:
This casserole is perfect for meal prep and can be stored in the fridge for up to 4 days.