Spread oatmeal on cookie sheet, place in 350 degree oven about 15-20 minutes, until lightly toasted, stirring occasionally. Blend bananas, peanut butter, egg, vanilla and sugar substitute with mixer until well blended. Stir in oatmeal. Let set a minute. Use two cookie sheets that have been sprayed with non-stick spray. Drop 24 rounded tablespoons, try to divide evenly. Flatten slightly with fingers or back of spoon. Bake at 350 degrees for about 12 minutes until lightly browned.