2. Cook the rice according to package instructions using the water.
3. In a large skillet, heat the olive oil over medium heat. Add the chopped onion and cook until translucent, about 5 minutes. Add the minced garlic and cook for another minute.
4. Add the chopped spinach to the skillet and cook until wilted, about 3-4 minutes.
5. In a large mixing bowl, combine the cooked rice, sautéed vegetables, crumbled feta cheese, salt, and black pepper. Mix well.
6. Transfer the mixture to a greased baking dish and spread it out evenly.
7. Bake in the preheated oven for 20-25 minutes, until the top is slightly golden and the casserole is heated through.
8. Let it cool for a few minutes before serving. Enjoy!
Notes:
This casserole is great for meal prep and can be stored in the fridge for up to 3 days.