I have made this recipe, with the peanut butter streusel topping, on several occasions. I usually make one regular loaf and four mini-loaves to give away. Friends look forward to receiving this special treat, and it always receives high compliments.
I used the peanut butter topping on the "Cream Cheese-Banana-Nut Bread" recipe from this site. The peanut butter topping did not turn out to be anything special, and probably 1/3 of it fell off when emptied from the pan. Definitely wouldn't make again. Blah.