PREHEAT oven to 350° F. Lightly grease 2-quart casserole dish.
COMBINE rice, cheese, chicken, evaporated milk, onion, eggs, cilantro, butter and jalapeños in prepared dish; stir well.
BAKE for 45 to 50 minutes or until knife inserted in center comes out clean.
FOR FREEZE AHEAD:
PREPARE as above; do not bake. Cover; freeze for up to 2 months. Thaw overnight in refrigerator. Uncover. Preheat oven to 350° F. Bake for 60 to 70 minutes or until knife inserted in center comes out clean.