Does he like mashed potatoes and sweet potatoes? Those would be easy to eat. I make a delicious sweet potato "puree" for lack of a better description. I microwave 4 to 5 large ones about 20 minutes (after stabbing about 4 holes in them with an icepick) on one side, then turn them over and do about 10 or so minutes more or until they are really soft all over, no hard spots.
Then I let them cool enough that I can peel them (easier to work with when warm I think) and put them in my food processor. I don't measure....sorry....so this is like how grandma would explain...LOL.
I add about:
4 shakes of pumpkin pie spice In big bottle with big holes in shaker (or to taste)
2 to 3 "PINK" spoonfuls (tiny spoon that comes with it) of Sugar Twin brown sugar (or to taste)
2 dashes of nutmeg from little can
dash of vanilla
And sometimes a squeeze of fresh lemon, if I have one, to brighten up the flavors.
I whip until smooth and boy, is it good. Tastes just like pumpkin pie filling. My mom likes to eat it cold, saying it's like a dessert or pudding. I'm thinking about trying to freeze it slightly and see if it's kinda like an ice cream.
It tastes so sweet from the natural sugars in the sweet potatoes, it feels like it's wrong to eat it. I never was a sweet potato fan until I started doing them this way. They are the main carb that I eat....lol.