Combine the quinoa, water, onion, garlic, red pepper, black beans, enchilada sauce, diced tomatoes, green chiles, corn, lime juice, cumin, chile powder, and cilantro in a slow cooker. Stir to combine. Season with salt and pepper, to taste. Cover and cook on high for 3 hours or on low for 6 hours, or until the liquid is absorbed and quinoa is cooked.
Step 2
Remove the lid and stir the casserole. Taste and adjust seasoning if necessary. Stir in the half the cheese and sprinkle the other half on top. Put the lid back on and cook until the cheese melts, about 15 minutes.