1 tablespoon olive oil
1 small yellow onion, chopped
2 cloves garlic, pressed or minced
5 cups (40 ounces) vegetable broth, divided (if your broth comes in 32-ounce containers, feel free to avoid opening another container by substituting 1 cup water for 1 cup broth in step 3)
1½ cups brown arborio/short-grain brown rice
2 tablespoons olive oil
12 to 14 ounces sliced Cremini (baby portobello) mushrooms, debris rinsed from mushrooms and drained
1 cup freshly grated Parmesan cheese
½ cup dry white wine
3 tablespoons unsalted butter, diced
2 teaspoons tamari (for extra flavor, optional)*
1 teaspoon sea salt, more to taste
Freshly ground black pepper, to taste
4 sprigs fresh oregano, leaves removed from stems and larger leaves torn into small pieces