Preheat oven to 350 degrees. In a medium bowl, combine soy milk, vanilla extract, egg, canola oil and peanut butter and mix well. In a large bowl, combine oats, flour, sugar and baking soda. Pour the peanut butter mixture into the dry ingredients and stir until a stiff dough forms. Mix in the chocolate chips. Form into 1-inch round balls and drop onto lightly greased cookie sheets. Bake for 13-15 minutes, or until lightly browned.