Preheat oven to 350 degrees. Bring water and salt to boil in heavy large saucepan. Reduce heat to medium-low. Add oats and cook 5 minutes, stirring frequently. Transfer oatmeal to 6-cup souffle dish.
Add all remaining ingredients except milk and stir until well combined.
Bake until set, about 1 hour.
Spoon porridge into bowls. Serve, passing milk separately. Serves 4-6 people.