For a richer flavor, use wild rice or brown rice instead of white rice. Adjust the cooking time accordingly. Experiment with different cheeses! Gruyere, Fontina, or a smoked Gouda would all be delicious additions. Add a handful of chopped walnuts or pecans to the rice mixture for added texture and nutty flavor. If you don't have fresh thyme, dried thyme can be substituted. Use about 1 teaspoon. To make it vegan, substitute vegetable broth for chicken broth and use a vegan cheese alternative.