In a medium saucepan bring water to a boil.  Stir in oatmeal and salt.  Cook 1 minutes, stirring occasionally.  Remove from heat and cover for 5 minutes.  Spray a small loaf pan with cooking spray, line with plastic wrap and spray plastic wrap,  Spoon oatmeal into prepared pan.  Let cool. Refrigerate overnight.  In the morning, pull the oatmeal out of the pan and slice into 1/2 inch thick slices.  In a skillet brown the slices in butter over medium heat until each side is golden brown, turn once.  Serve with syrup, dust with powdered sugar, if desired.