Holiday Potato Casserole
["3 lb. potatoes, peeled and quartered)", "1/2 c. margarine", "2 (3 oz.) pkg. cream cheese, softened", "1 c. shredded Cheddar cheese, divided", "1 (2 oz.) jar pimentos, drained", "1 small green pepper, chopped", "1/2 c. grated Parmesan cheese", "1/4 c. milk", "1 bunch green onions, chopped", "1 tsp. salt"]
["Cook potatoes 15 minutes or until tender.", "Drain and mash. Add butter and cream cheese.", "Beat at medium speed with mixer until smooth.", "Stir in 1/2 cup Cheddar cheese and next 6 ingredients."]
["potatoes", "margarine", "cream cheese", "Cheddar cheese", "pimentos", "green pepper", "Parmesan cheese", "milk", "green onions", "salt"]