Preheat the oven to 350°F and prepare the mushrooms by tossing them with olive oil, thyme, and salt before baking for 10-15 minutes.
In a large pot, sauté the onion, garlic, mushrooms, thyme, butter, and salt until fragrant.
Add the rice and cook until lightly toasted.
In a separate bowl, combine the mushroom soup and water, then gradually add it to the rice mixture.
Stir until the liquid is reduced and the rice is tender.
Finally, stir in the butter, parmesan cheese, black pepper, and parsley.
Serve the risotto garnished with more parmesan, roasted mushrooms, black pepper, and parsley.