Pre-heat oven broiler. Cook onion in a hot cast iron skillet over medium heat for 4-5 minutes or until tender.
Stir in the rice. Add 1/2 cup water and simmer for 3 minutes or until water is absorbed. Add milk and simmer, stirring occasionally for 8-10 minutes. Stir in another 1/2 cup water, pumpkin puree, sage, salt, pepper, and nutmeg.
Cook 8-10 minutes or until rice is tender and creamy. Stir in 3/4 cup cheese and chicken, sprinkle with remaining 1/4 cup cheese.
Place skillet under broiler for 2-3 minutes or until golden brown. Sprinkle with sage before serving.
Video
Notes
Use pot holders to move the cast iron skillet. Serve with garlic bread or your choice of side.