Preheat oven to 350°F Combine beef, 1/2 cup tomato sauce, bread crumbs, 1/4 cup bell pepper, onion, 1/2 teaspoon salt, oregano and black pepper in large bowl; mix well. Pat onto bottom and up side of ungreased 9-inch deep-dish pie plate.
Bring water and remaining 1/2 teaspoon salt to a boil in medium saucepan. Stir in rice; cover and remove from heat. Let stand 5 minutes or until water is absorbed. Add remaining 1-1/2 cups tomato sauce, 1/2 cup cheese and remaining 1/4 cup bell pepper to rice; mix well. Spoon rice mixture into meat shell. Cover with foil; bake 25 minutes.
Remove from oven and drain fat carefully, holding pan lid over top to keep pie from sliding. Top with remaining 1/2 cup cheese. Bake, uncovered, 10 to 15 minutes or until cheese melts. Carefully drain fat again. Cut into wedges to serve.