>> title: Millionaire's Shortbread
>> category: Bars & Brownies
>> tags: caramel, shortbread, chocolate, dessert, oven
>> counters: Bakery
>> aka: millionaires shortbread, caramel slice, caramel shortbread, millionaire bars
>> servings: 9
>> time: 3 hr
>> slack: narrow — the caramel is ten minutes of standing right there: short of a thick set it runs out of the slice, past it the condensed milk catches and tastes burnt

Preheat the #oven{} to 350°F (175°C).

Line an #8x8-in pan{} with parchment.

Beat @unsalted butter{1/2%cup}(115 g) with @granulated sugar{1/4%cup}(50 g), @all-purpose flour{1 1/4%cup}(160 g), @table salt{1/4%tsp}(1.5 g).

>> step: press and bake at 350°F for 25 min
Press @&(~1)shortbread dough{} into the pan and bake at 350°F for ~{25%min}.

>> step: boil to a thick caramel, 10 min
Boil @sweetened condensed milk{14%oz}(400 g), @unsalted butter{1/2%cup}(115 g), @light brown sugar{1/2%cup}(100 g), @golden syrup{2%Tbs}(40 g) in a #saucepan{}, stirring, for ~{10%min}.

Pour @&(~1)caramel{} over @&(~2)baked shortbread{}.

Melt @semisweet chocolate{7%oz}(200 g).

>> step: spread and chill 2 hr
Spread @&(~1)melted chocolate{} over @&(~2)cooled caramel layer{}, then chill ~{2%hr}.