Hokkaido Bake Cheese Tart IV

Hokkaido Bake Cheese Tart Part I 
Hokkaido Bake Cheese Tart Part II
Hokkaido Bake Cheese Tart Part III

Haha. It seems I can't get enough of Bake Cheese Tarts eh?

Made 4 dozens of these irresistible treats for a friend today; this must be the largest batch I've baked so far. As I have to deliver them by noon time, I decided to prepare the tart pastry and cheese filling yesterday. So that leaves blind-baking the tart pastry this morning, filling with the cheese custard, then assemble and a final bake, all completed within 3 hrs. I've explained all the steps clearly in the previous three posts listed above before, so no step-by-step pictures this time.

Anyways, the purpose of this post is to update yet another refinement/modification to the previous recipes, catering to specific number of tarts, as well as variation in ingredients used. I'm also very forgetful lah, so all these recipes posted are like instant references for me to remember what ingredients to buy each time (instead of having to write a shopping list every time) :p

For the tart dough, instead of using icing sugar, I used caster sugar instead because I ran out of icing sugar (which I thought I had, silly me). But the result turned out to be great, the tart pastry is more crunchy like biscuit and closer to the original =D

For the cheese custard, since I used caster sugar, it was added together with the cheeses instead of later part with the corn starch (previous recipes). Cheese-wise, I added a bit of slice processed cheese and mixed shredded cheese, no problem at all.
 
So, like I always mention, feel free to adjust the ingredients to suit personal preference.

For the tart pastry and cheese filling preparation, I made them in 2 batches, i.e. 27 tarts per batch (24 + 3 extras). I always make a few extras to cater for taste-test and rejects (yep, I broke one tart case accidentally and a few of the tarts got browned and didn't match with the rest :p). Why didn't I make all 48 (or rather 54) of them at one go? I think it's easier to handle and QC, although slightly more work.

Yay, the perk about baking for others, I can taste-test legitimately without having to bake a fresh batch for myself, too sinful lah. Extras also go to my kiddo (poor kiddo, can only eat rejects, LOL!).

I love these 12-hole cupcake boxes from Phoon Huat which pack the cheese tarts perfectly.

Bake Cheese Tart
* makes 27 tarts using 7cm fluted cutter/4cm base tart case
* The recipe can be halved

(A) Tart Dough

• 300g all purpose flour
• 60g caster sugar
• 150g salted butter, cut into cubes, cold
• 3 egg yolks (regular size egg)
• 1.5 tsp fresh milk

(B) Cheese Custard

• 190g Philadelphia cream cheese
• 3 pieces Kiri cream cheese
• 2 slices Kraft singles processed cheese
• 30g mixed shredded cheese (mozzarella, cheddar, parmesan)
• 100g mascarpone cheese
• 60g salted butter
• 200g Hokkaido milk
• 60g caster sugar
• 24g corn starch
• 2 eggs (regular size egg)
• 1 tbsp lemon juice
• 1/2 tsp vanilla extract
• 1 egg yolk + milk (mixture for brushing on top of custard)

Steps

1. Start with tart pastry. Add all purpose flour and caster sugar into a mixing bowl, mix well. Add cold salted butter cubes.
2. Using finger tips, break the butter and rub the butter into the flour mixture, until it resembles bread crumbs.
3. Add egg yolk to the mixture, use a scrapper to mix the egg yolk into flour mixture.
4. The mixture will come together and thereafter, use hands to form the mixture into a dough.
5. Add fresh milk, the dough will become slightly pliable.
6. Form the dough into a rectangle flat parcel. Place on a piece of clingwrap.
7. Wrap the dough and place in fridge to rest for about 1 hour.
8. While waiting, prepare the cheese custard. Add all the cheeses, salted butter, milk and caster sugar into a small pot. Place the pot into a larger pan/pot/wok with barely simmering water. This is the bain marie method, to create a gentle and uniform heat for cooking custard. Keep stirring the mixture till everything is melted.
9. Once the mixture has melted, add sifted corn starch. Mix till well-blended, the mixture will thicken slowly.
10. Add eggs, lemon juice and vanilla extract. Mix till well-blended, the mixture will further thicken into custard. Taste the custard and if desired, add some sea salt to increase intensity of cheese taste.
11. Let the custard cool slightly and sift into another bowl. There may be some fine lumps and grainy bits in the custard, sifting will yield a more velvety smooth custard. Let the custard cool down completely and transfer to a piping bag. *If preparing in advance, transfer the custard to a piping bag and store the bag in the fridge till ready to use. Before using, let the custard return to room temperature.
12. Back to the tart pastry. Remove the dough from fridge. Dust a baking mat (and rolling pin) with flour, roll the dough thinly, about 3mm thickness. Use a 7cm fluted cutter to stamp the dough. 
13. Use a metal scrapper (dust with flour) to lift up the cut dough. Place the cut dough over a tart case (5.5cm top/3cm base) and gently press it downwards.
14. Using finger tips, gently press and mold the dough into the tart case. Use a fork to poke holes at the base of the tart cases. *If preparing in advance, store the molded tart dough in plastic container, or each piece of cut dough not molded into case yet - separating with baking paper or plastic sheet in between, then store container in the fridge. Before using, let the dough soften at room temperature slightly.
15. For assembly. Preheat and bake the tarts at 180 degree celsius, fan mode for 10mins. Remove from oven and place on wire rack to cool After the tart pastry is cooled slightly, remove from the case and let cool completely before use.
16. Preheat oven to 235 degree celsius top and bottom heat.
17. Pipe the custard into the cooled tart pastry, shape slightly domed. Brush custard evenly with egg yolk-milk mixture.
18. Bake the tarts at 235 degree celsius top and bottom heat, for 8-10 mins. Watch closely towards last 2 minutes to prevent over-browning.
19. Once baked, remove from oven and place on wire rack to cool. Best eaten warm, freshly baked.