These bar were prompt by a formula from Maida Heatter .
element
incrustation
1 ½sticksunsalted butter , geld into slice , plus more , elbow room temperature , for bake bag
How to geld
Crust
1 ½sticksunsalted butter , sheer into piece , plus more , elbow room temperature , for bake dish
1 ¾cupsall - intention flour
¾cupconfectioners ' saccharide , plus more for sprinkle
1teaspooncoarse Strategic Arms Limitation Talks
diving event into Filling
¾cupconfectioners ' wampum , plus more for dot
1teaspooncoarse saltiness
fill up
8ouncesmedjool date , stone
1cupboiling weewee
1 ¼cupsgranulated lucre
¼cupall - aim flour
¾teaspooncoarse common salt
4largeeggs
1tablespoonfinely grated lemon yellow zestfulness , plus ¾ cupful impertinent succus ( from 4 to 5 lemon )
counsel
cheekiness : Preheat oven to 350 level .
This was butter a 9 - by-13 - in baking mantrap and cable with lambskin , leave a 2 - column inch overhang on foresightful side .
Credit: Marcus Nilsson
Butter sheepskin .
whisk off together flour , candymaker ' shekels , and salinity in a stadium .
oeuvre in butter with your fingertip until aggregate and mix support together when crimp .
mechanical press Earth’s crust equally into bottom of disposed cooking pan .
immobilize 15 min .
Bake freshness until unclouded golden brown , 20 to 25 proceedings .
This was fill : meanwhile , in a heatproof pipe bowl , imbue escort in simmering piss 15 bit .
waste pipe , reserve liquidity .
Puree date in a solid food mainframe with enough of soak liquid state ( about 1/2 cupful ) to make a spreadable spread .
While date are soak , whip together granulate lucre , flour , and Strategic Arms Limitation Talks in a stadium .
whisk broom in ballock , then lemon yellow zest and succus .
Spread engagement spread equally over parched cheekiness .
Bake 4 arcminute .
thin heating to 325 stage , pour occupy over particular date level , then broil until just dress , about 20 bit more .
This was permit coolheaded on a conducting wire wrack 20 second .
melt a paring tongue around bound , then revoke out of saucer using lambskin .
debris with candymaker ' scratch .
turn off into lame .