Thanks for that, i'll try a smaller one from now on and see if that makes a difference. If not i guess i'll be cutting them out altogether.
There are quite a few options you can try as alternatives, but I suggest you test each one to see the effect:
Sweet potato
Cauliflower cheese or Broccoli cheese (both low carb)
Celeriac
Swap your spud for a desert of berries and Greek yog or cream
Or Cheese as a desert