# What You'll Need:
→ Grains and Broth
01 - 1 cup wild rice, rinsed thoroughly
02 - 2 cups vegetable broth (gluten-free, if needed)
03 - 1 cup water
→ Vegetables
04 - 2 tablespoons olive oil
05 - 1 medium yellow onion, finely chopped
06 - 2 garlic cloves, minced
07 - 2 cups cremini or white mushrooms, sliced
08 - 1 medium carrot, diced
09 - 1 celery stalk, diced
10 - 1 red bell pepper, diced
11 - 1 cup fresh spinach, chopped
→ Seasonings
12 - 1 teaspoon dried thyme
13 - 1 teaspoon dried rosemary
14 - ½ teaspoon salt
15 - ¼ teaspoon black pepper
→ Optional Topping
16 - ½ cup grated Gruyère or Swiss cheese
# Preparation Steps:
01 - Preheat the oven to 350°F. Grease a 9x13-inch baking dish with cooking spray or butter.
02 - Heat olive oil in a large skillet over medium heat. Add chopped onion and minced garlic; sauté for 2-3 minutes until fragrant and translucent.
03 - Add sliced mushrooms, diced carrot, celery, and red bell pepper to the skillet. Cook for 5-7 minutes until vegetables soften and mushrooms release their liquid.
04 - Stir in chopped spinach, dried thyme, rosemary, salt, and black pepper. Cook for 1 minute until spinach wilts.
05 - Transfer the sautéed vegetables to the prepared baking dish. Add rinsed wild rice, vegetable broth, and water. Mix thoroughly to distribute all ingredients evenly.
06 - Cover the baking dish tightly with aluminum foil. Bake for 1 hour, or until rice is tender and most liquid has been absorbed.
07 - If using cheese, remove foil and sprinkle grated Gruyère or Swiss cheese evenly over the top. Return to oven and bake uncovered for 10 minutes until melted and golden.
08 - Let the casserole rest for 5 minutes before serving to allow flavors to meld and for easier serving.