Preheat oven to 350 degrees F.
Butter a 13 X 9 casserole dish.
To cook the quinoa:
Pour bone broth in a large pot and bring to a boil.
Add the quinoa, reduce the heat to low, cover the pot and cook for 15 minutes.
To saute the mushrooms:
Heat the olive oil in a pan over medium heat.
Saute the mushrooms in the olive oil until they are soft. (About 10 minutes)
To make the casserole:
When the quinoa is cooked, add the rest of the ingredients to the pot and stir.
Pour the quinoa mixture into the casserole dish and put it in the oven.
Bake for 30 minutes.