Pre-heat oven to moderately hot (190 degrees celsius, fan-forced).
Cream butter, sugar and eggs. If you're using a stand mixer, beat on medium-high speed for 5 minutes.
Sift flour, salt and baking powder and fold into mixture. Add marmalade and, if you're adding the optional choc chips, add those too and stir well to combine.
Place tablespoonfuls on a greased tray and bake for 10-12 minutes.