Combine chocolate, sugar & soy milk in a steaming bowl & place in a larger pot with some water in it. Cook over low heat until the chocolate has been smoothly melted. Stir in the oatmeal. Drop the peanut butter in by rounded teaspoonfuls. Swirl it around until it is evenly distributed but not blended in. Line a small, shallow baking dish with wax paper. Pat the chocolate mixture in with the help of a cake spatula. Refirgerate for several hours until chilled & firmly set. Cut into 3 cm squares.