Easy Spanish Rice
["1/2 c. vegetable oil", "2 medium onions, sliced thin", "1 medium green pepper, chopped", "1 lb. ground beef (optional)", "2 c. regular rice (uncooked)", "3 (8 oz.) cans tomato sauce", "3 1/2 c. hot water", "2 tsp. salt", "1/8 tsp. pepper", "2 tsp. prepared mustard"]
["Heat oil in skillet.", "Add onion, green pepper, beef and rice. Stir over high heat until lightly browned.", "Add tomato sauce and remaining ingredients.", "Mix well.", "Bring quickly to a boil.", "Cover and simmer 25 minutes.", "Serves 8."]
["vegetable oil", "onions", "green pepper", "ground beef", "regular rice", "tomato sauce", "water", "salt", "pepper", "mustard"]