My top suggestion is
gnocchi. If you are not familiar with the name, it is a bite size pasta made with mixture of mashed potato and flour, and you can enjoy it with any of your favourite sauce/condiments. It is a very convenient, easy, versatile, hearty and tasty choice... this is the basic recipe.
-1kg(2lbs +) of potatoes, washed. (whole, unpeeled)
-250g(9oz) of flour. + some extra to dust the work surface
Boil/or pressure cook the potatoes AS IS (whole, with skin on). Drain, when it is cooled (but still warm) enough peel the potatoes, and mash/puree it thoroughly. Let it cool.
Flour the flat work surface, mix the potatoes and flour and knead well to make a smooth but slightly rumpy texture.
Roll the dough to make several ropes about the thickness of your finger. Cut them into about 2,5cm/1inch pieces. you can form each pieces as you like, the classic form is like this
But it is not necessary, you can make a little ball slightly flattened in the middle, or something like ...
Prepare a lightly salted boiling water in an ample pot, drop gnocchi, not too many at a time. Scoop them up as they come to the surface to a serving dish.
They are wonderful any kind of condiment/sauce you would use for other kind of pasta (my favourite is a tomato based sugo with some bacon, creamy mushroom, or 4 cheese sauce!!), you can also make variations of gnocchi by mixing some spinaci or mashed pumpkin...
Potatoes are so versatile there are many other options, it is just gnocchi is my fave, when it comes to "soft" version of potato choices...if there are interests I will post more!!