I like this Cooks Ilustrated version, but of course there’s a pay wall.
" Fruit Crisp
Published July 1998
WHY THIS RECIPE WORKS
“We tried everything from Grape-Nuts to cookie crumbs as a topping for our fruit crisp recipe, and found the ideal topping mixture to be chopped nuts and flour. Cutting the butter into the flour is crucial in creating a crisp topping, and we found that a food processor was ideally suited …”
