This pâte sablée recipe is very good. I would replace some of the icing sugar with cacao powder and see how it tastes. It makes a 22cm tart base.

100g butter

170g flour

20g ground almonds

65g icing sugar

1g salt

40g eggs

vanilla

In the mixer,beat the cold butter and flour together until you get a sandy texture.Add the almonds, sugar and salt. Mix. Add the egg and vanilla. Make a ball, wrap and chill for at least 2 hours.

King Arthur has a chocolate pie crust recipe https://www.kingarthurbaking.com/recipes/chocolate-pie-crust-recipe, and there are numerous options including Martha for cocoa pate sucree.

What will your filling be?

^^Those both sound like possibilities. Martha Stewart’s chocolate pate sucree was my first thought.

Thank-you! IC, I've saved your sablée recipe. I hadn't found a reliable one before, perhaps because of the differences in the flour, but this sounds kind of foolproof.

Lisa and Chloebud, I always like KA recipes better when some bloggist has tweaked them. This one looks more like the deeply chocolatey I might have made myself, but wrong for this pie. If you follow the link to the blog and then search for the flavored crusts, she has a peanutbutter crust that sounds fussy, but super, and a different approach to using an FP than I've seen. I night try it. MS's recipes, in my experience are either great or awful, so I appeciate the recommendations from you both, and trust that it's good. It's not what I actually was looking for, but I think I can use the propotions to make what I want. It's that bit of inspiration I needed.

The pie is a total experiment and may flop, but there will be pumpkin custard in it...

You might also check to see if Rose Levy Beranbaum has one…other than a crumb crust.

I checked my Pie and Pastry Bible from Rose. This is the only non-crumb chocolate crust recipe in the book.

https://app.ckbk.com/recipe/baki38612c02s001ss009r007/sweet-chocolate-cookie-tart-crust

Sigh. I thought I had at least one RLB book, but if so, it's not with any of the others. My baking books run heavily to bread. While my kitchen remodel went on interminably in 2009 (it did terminatie in 2010), I kept buying and reading bread books. I haven't needed pie or tart crust recipes since the couple I picked up for food processor.

Chloebud, thanks for the recommendation, but none of my tricks work to make it accessible.

In searching for RLB--I didn't really find anything but a video, I did find a recipe that looks intriguing: https://food52.com/recipes/78038-pumpkin-tahini-pie-with-chocolate-pie-crust

I wish it had a recommend from one of you, but it's the kind of thing I was looking for and it's even paired with pumpkin, so I might just try it.

Thank-you all!

love to see what Lars has to say ... love his butter-cottage cheese-flour recipe

But Dave, that's not the kind of thing I'm asking for. I'm sure you can find it in other threads if you want a rerun.

plllog, the link I posted was displaying the recipe at first. Not sure what happened. FWIW, I took these pix from my Pie and Pastry Bible.

Thank-you! I'll read it later, when I'm more with it.