Heat oil in a skillet over medium heat. Add mushrooms, shallot and garlic and sauté until mushrooms have softened and are starting to brown, about 3 - 5 minutes.
Add quinoa and cook until heated through, another 1 - 2 minutes. Season with salt and pepper and remove from heat. Stir in parsley and serve immediately.
Notes
To make this a heartier dish, feel free to stir in some grilled chicken or a can of chickpeas.