01 -
Preheat the oven to 350°F (180°C).
02 -
Drain red kidney beans and corn. Rinse the quinoa under cold water. Dice white onion and red bell pepper. Grate the cheddar cheese if not already shredded.
03 -
In a large bowl, combine all ingredients: quinoa, beans, corn, tomatoes, onion, bell pepper, cheese, chili powder, cumin, garlic powder, salt, and water. Mix thoroughly.
04 -
Lightly oil a casserole dish or baking pan. Spread the mixture evenly into the pan.
05 -
Bake in the preheated oven for 30 minutes. Then, turn off the heat but leave the casserole in the oven for another 25 minutes to allow it to finish cooking in the residual heat.
06 -
After the casserole has cooled slightly, divide it into 3 equal portions and transfer to meal prep containers. It will keep in the refrigerator for 3-4 days.