Apple and pumpkin butter are great seasonal items to have in your pantry. However, as with most things, you don't need a recipe for other "butters", you need a procedure that you can duplicate with any type of fruit. This way, you've freed yourself from recipes and have created something you can call your own.
Basic procedure for making fruit "butter":
Cook your fruit or vegetable in liquid until very soft
Puree or pass through a food mill
Add spices, seasonings and condiments.
Cook to evaporate liquids and adjust consistency.
So, with that basic procedure, you can make apple butter, Red Pepper Butter, Quince Butter, Kiwi Butter, Corn Butter, cranberry butter, peach butter, lemon butter, onion butter, green tomato butter.... must I go on?
Cook by basic methods and everything else is up to the ingredients you have on hand and the inspiration in your head.