Optional: shredded cheese for topping, avocado, cilantro, more salsa, hot sauce
Cook quinoa according to package instructions. Allow to cool for a bit.
In a large bowl, mix quinoa, beans, corn, salsa, and cheese together.
Halve the bell peppers, removing the stem, and use your fingers to pull out all the guts. Stuff the quinoa mixture inside. Freeze in Tupperware or ziplocs. Cooking right away? Cook at 375F for 30 minutes.