Preheat oven to 350°. In a large skillet, brown pork in oil; drain. Stir in the beans, soup, tomatoes, chiles, rice, water, salsa and cumin.
Pour into an ungreased 2-qt. baking dish. Bake, uncovered, until bubbly, about 30 minutes. Sprinkle with cheese; let stand 5 minutes before serving. If desired, serve with jalapeno slices.
Freeze option: Sprinkle cheese over cooled unbaked casserole. Cover and freeze. To use, partially thaw in refrigerator overnight. Remove from refrigerator 30 minutes before baking. Preheat oven to 350°. Bake casserole as directed, increasing time as necessary to heat through and for a thermometer inserted in center to read 165°. If desired, serve with jalapeno slices.