Twisted,
I have an Ashkenaz friend who does the same as you (i.e./he eats corn on the cob, string beans, and peanuts on Pesach).
If I were Ashkenaz, I’d be matir neder and follow the shita of those who permit eating kitniyot, anyways, at least those foods which shouldn’t technically be considered kitniyot, like corn and peanuts.
I do the same as you, and purchase peanuts raw in the shell (the OU says, btw, that the only problem with peanuts roasted in the shell is that they’re treated with BHA, which is a derivative of kitniyot; R’ Y.E. Spektor writes explicitly that kitniyot derivatives, such as oils and corn syrup, are mutar for Ashkenazim). Homemade peanut butter is a lot cheaper than KFP almond butter or cashew butter, both of which cost $9 a jar, at least.