For a recipe that extra olive oil has to be used to a crumbed biscuit base wouldn't be my fancy - I don't think that I would like that taste so would use melted butter - would you. Or is oil ok.
woof - it is for a biscuit base ie cheese cake which I have used melted butter before but this is calling for olive oil which I am a bit iffy about as there are more ingredients to the cake which I wouldn't like to spoil because of the oil.
I come from a time when olive oil was for sore ears but thanks to Ryanair and in-laws who live in Spain I'm a convert.
At least try the recipe, the worst that can happen is it goes in the bin but I'll bet it's actually brilliant. :-)