Cook
onions in medium saucepan, that has been sprayed with non
stick cooking spray, until lightly browned. Add the green
peppers, and cook 2 minutes, add 1 to 2 tablespoons water,
if needed to thin sauce. Spray rack of broiling pan with
Non Stick cooking spray. Broil liver for about 3 minutes
or until top is browned, turn and broil for 3 minutes more.
Slice liver very thin and add tomato mixture. Heat 2 minutes
and serve