In a medium skillet combine 1/4 cup brown sugar, 2 tablespoons margarine, and 1/4 teaspoon cinnamon; cook and stir over medium-low heat until margarine is melted and sugar is dissolved. Add pears; cook about 5 minutes or until tender, stirring occasionally.
In a medium mixing bowl use a fork to beat eggs slightly. Beat in milk and vanilla. In a small mixing bowl stir together the 3 tablespoons brown sugar, 1 teaspoon cinnamon, and nutmeg; stir into egg mixture. Dip bread into egg mixture, coating both sides.
In a large skillet melt the remaining 2 tablespoons margarine. Add bread; cook over medium heat for 4 to 6 minutes or until golden brown, turning once. Add more margarine as needed.
To serve, top each bread slice with pear mixture and ice cream. Makes 6 servings.