Preheat donut machine
Combine dry ingredients in large bowl.
Make a well in the center & whisk in butter, then milk & egg until smooth.
Fold in marmalade so it's swirled throughout.
Transfer half the batter to piping bag with large open tip.
Spray donut maker with cooking spray before adding batter.
Pipe in batter, close lid & cook for 6 minutes.
Carefully remove & allow to cool on wire rack before adding glaze.
Pipe in the next batch until all batter is used.
This made about 16 mini-donuts. (donut maker does 5 at a time)