Preheat your oven to 350°F (175°C).

In a large mixing bowl, combine the cooked quinoa or rice, chopped vegetables, and shredded cheese. Add garlic powder, onion powder, and Italian herbs.

In a separate bowl, whisk the eggs until frothy and mix them into the vegetable mixture until combined.

Lightly grease a baking dish and pour the casserole mixture in, pressing it down firmly.

Bake for 30-35 minutes until golden brown and set in the center.

Let cool for 5-10 minutes before serving to ensure it holds its shape.