Crumble recipe please

[rislip]

I made apple crumble last weekend and whilst the apple part was lovely, the crumble was a bit flat. Not crunchy and lovely. My recipe was butter, soft brown sugar and plain flour. What am I missing? Does anyone have a super secret ingredient?

mix a couple of spoonfuls of oats into the crumble mix.

I do what Nigel Slater syas and splash a little water over the crumble mix before baking. It makes the crumbs chewier and tastier.

Sounds like you didn't put enough butter in btw.

Thanks, I'll try both.