In a large mixing bowl, stir together flour, pudding mix, chocolate pieces, sugar, baking powder and salt. In a small bowl, combine eggs, milk, oil and vanilla. Stir into flour mixture just until combined. Fill greased or paper bake cup lined muffin cups 2/3 full. Bake in a 375ºF.  oven for 18 to 20 minutes or until golden brown. Cool on a wire rack. Frost with cream cheese frosting; sprinkle with green sugar, then milk chocolate pieces. Makes 18.