Step #1 --FILLING----- 1 c Whipping cream 4 oz Bittersweet; (not -unsweetened) or ; semisweet ; chocolate, sugar, ; finelysliced 2 Baskets fresh raspberries; -(1/2-pint) 1 ts Powdered sugar 1 ts Unsweetened cocoa powder For Crust: mix flour, cocoa & salt in medium bowl.
Step #2 Add butter and rub in, using fingertips, until mixture resembles coarse meal.
Step #3 add water & egg yolk & mix in with fork until well incorporated.
Step #4 Gather dough into rectangle chill 20 mins.
Step #5 (Can be prepared 4 days ahead.
Step #6 Let dough soften slightly at about room temp before rolling out.
Step #7 ) preheat your trusty oven to 375F.
Step #8 Butter & flour 13 3/4 x 4-inch rectangular pan with 1-inch-high sides & removable bottom.
Step #9 Roll out dough between 2 sheets of waxed paper to 15x6-inch rectangle.
Step #10 Peel off 1 waxed paper sheet.
Step #11 Invert dough into prepared pan, press evenly to fit.
Step #12 Freeze until firm, about 10 mins.
Step #13 Peel off second waxed paper sheet.
Step #14 Trim edges.
Step #15 Line crust with foil; fill with dried beans or pie weights.
Step #16 bake this until crust is set, about 12 mins.
Step #17 Remove foil & beans.
Step #18 bake this until crust just begins to darken around edges, piercing with toothpick if crust bubbles, about 12 mins longer.
Step #19 remove this from oven; maintain oven temperature.
Step #20 Spread jam over bottom of crust.
Step #21 bake this until jam is set, about 3 mins.
Step #22 Transfer pan to rack; cool completely.
Step #23 For Filling: Bring cream to boil in heavy small saucepan.
Step #24 remove this from heat.
Step #25 Add chocolate & whisk until melted & smooth.
Step #26 Transfer chocolate ganache to bowl & put in the fridge until chilled but not firm, about 45 mins or less Using electric mixer, beat ganache until very thick & semifirm.