Bring a large saucepan, stockpot, or dutch oven to medium heat on the stovetop. Add olive oil and minced garlic, and sauté for 1-2 mins, until fragrant.
Add sliced mushrooms, thyme, salt, and pepper and sauté for 5-7 mins, stirring frequently.
Next, add brown rice, vegetable broth, and miso paste to the pot. Stir and bring to a boil, before covering and reducing heat. Let pot simmer (covered) for about 45 minutes, or until the liquid is absorbed.
Once ready, stir in parmesan cheese. Serve with your favourite protein and enjoy!