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Miso Squash Tart with Caramelized Onions

by: Amy on: Oct 12, 2024

A crisp parmesan and black pepper shortcrust is the base of a savoury tart layered with deeply caramelized onions and petals of squash, sweet potatoes, and red onions. Finished with a drizzle of your best olive oil and flakey salt.

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The transition between tomato girl summer to squash tart autumn (official name still pending) was quick. I was still making a few heirloom tomato tarts last week and dropping slices off to friends that love a perfectly multi-coloured tomato like me. I knew tomato season was coming to and end though, when leaves from the trees started falling and a trip to the farmer’s market could not longer be done wearing a t-shirt and shorts without a jacket. I did manage to squeeze in one last heirloom tomato tart, finished with the tallest mountain if freshly grated parmesan, this week and it was the most perfect way to end the late summer season for me.

I wasted no time and immediately started on making an autumnal version of a tart to fill the irregularly shaped tomato sized hole in my summer-loving heart. Despite being a tomato girl through and through, I do love fall produce (especially squash) just as much and it only seemed natural to kick off fall tart season with a tart that celebrates the beautiful shapes and flavours of squash. I’ve always caught myself thinking of how the squash petals were arranged on this specific squash tart, and I knew I would want to do something similar for my version. Acorn and butternut squashes are sliced thinly alongside sweet potato and red onion, and they are arranged on top of a layer of deeply caramelized onions inside a parmesan and black pepper tart shell thats brushed with white miso. The bake time is quite long, but it allows for the vegetables to get really tender and crisp up along the edges. The squash, root vegetables, and red onions become really sweet when cooked, which pairs nicely with the deeply savoury tart shell with miso. It has only been a week but I’ve already made several versions of this tart to arrive at this version here, and it’s the one I’m making for Thanksgiving this weekend.

Miso Squash Tart with Caramelized Onions

A crisp parmesan and black pepper shortcrust is the base of a savoury tart layered with deeply caramelized onions and petals of squash, sweet potatoes, and red onions. Finished with a drizzle of your best olive oil and flakey salt.
Makes 8 servings
By Amy

Ingredients

Parmesan Black Pepper Shortcrust

  • 120 g (1 cup) whole wheat flour
  • 120 g (1 cup) all-purpose flour
  • 30 g (~1/4 cup) parmesan cheese, finely grated
  • 1/2 tsp kosher salt
  • 1/2 tsp black pepper
  • 140 g (10 tbsp) unsalted butter, cold
  • 90 ml (6 tbsp) ice water

Caramelized Onions

  • 2 tbsp olive oil
  • 4 medium yellow onions
  • kosher salt, to taste
  • 2 cloves of garlic, thinly sliced

Squash, Sweet Potato, and Red Onion Petals

  • 1/2 butternut squash
  • 1/2 acorn squash
  • 1 medium sweet potato
  • kosher salt
  • 57 g (1/4 cup) unsalted butter, melted
  • flakey salt, to taste

Assembly

  • 2 tbsp white miso
  • 2 tbsp warm water
  • 2 tbsp olive oil
  • kosher salt, to taste
  • 57 g (1/4 cup) unsalted butter, melted

Instructions

Parmesan Black Pepper Shortcrust

  • Preheat oven to 350F and line the bottom of a 10-inch tart pan with a remove-able bottom with a small piece of parchment.
  • In large bowl, whisk together flours and kosher salt. Add finely grated parmesan and black pepper. Mix.
  • Using a cheese grater, grate large pieces of cold butter into the flour mixture. Using your fingers, press the butter into the flour mixture. You want to still be able to see pieces of butter.
  • Drizzle in 6 tbsp of ice water and toss the mixture until the water has been absorbed. Gently squeeze handfuls of the mixture together until a shaggy dough forms. Add a few drops of water to any parts that are dry and won't come together. Pat into a disc and wrap in plastic. Chill dough for at least 1 hour.

Caramelized Onions

  • While the dough is chilling, make the caramelized onions.
  • Thinly slice yellow onions.
  • In a large pan over medium heat, heat up 2 tbsp of olive oil.
  • Add onions to the pan and season with kosher salt.
  • Over medium-low heat, cook the onions while stirring occasionally, until they are very soft and deep golden brown, about 15 minutes. Add the garlic and cook, while continuing to stir. Cook until onions are deeply browned, an additional 20 – 30 minutes. Allow onions to cool.

Squash, Sweet Potato, and Red Onion Petals

  • Using a mandolin or a sharp knife, thinly slice the squash, sweet potato, and red onion crosswise.

Assembly

  • Preheat oven to 350F.
  • Roll out chilled tart dough on a lightly floured surface (or between two pieces of parchment paper), to about 1/8-inch thick. Transfer to tart pan and gently press into corners and trim off excess. Freeze tart shell for 15 minutes.
  • In a small bowl combine miso and warm water. Whisk until smooth.
  • Remove chilled tart shell from freezer and brush on an even layer of miso.
  • Spread caramelized onions across crust in an even layer.
  • Starting from the outside, arrange vegetables in concentric circles, with rounded edges facing upwards.
  • Drizzle olive oil on tart and season with kosher salt.
  • Bake the tart until the edges of vegetables are browned and the crust is golden brown, about 75 – 85 minutes.
  • Remove tart from oven and brush tart with melted butter. Top with flakey salt.

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Recipe Rating




Sweet Comments:

  1. Chickie says

    Dec 26, 2024 at 3:25 pm

    This tart had good flavor. The pastry was tough, though. Perhaps, use all white flour instead of 1/2 wheat, 1/2 white. Under the ingredients list for squash, sweet potato and red onion petals red onion was missing.

    Reply

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day two: sparkly matcha neapolitan shortbread cook day two: sparkly matcha neapolitan shortbread cookies ✨

the instructions might seem confusing, but if you watch the video to see how the different flavour layers are stacked, it will make much more sense! these slice and bake cookies freeze extremely well so you can make the dough now and bake them off when you want to gift them. (makes 40-44)

vanilla dough:
85g (1/3 cup + 2 tsp) unsalted butter, room temp
45g (6 tbsp) powdered sugar
2 tsp vanilla
90g (3/4 cup) all-purpose flour
1/4 tsp salt

matcha dough:
85g (1/3 cup + 2 tsp) unsalted butter, room temp
45g (6 tbsp) powdered sugar
90g (3/4 cup) all-purpose flour
2 tsp culinary matcha powder
1/4 tsp salt

strawberry dough 
85g (1/3 cup + 2 tsp) unsalted butter, room temp
45g 6 tbsp) powdered sugar
90g (3/4 cup) all-purpose flour
2 tbsp freeze-dried strawberry powder 
1/4 tsp salt

1 egg white
coarse sanding sugar

for the vanilla dough, combine butter and powdered sugar in a bowl. mix until smooth. add vanilla. add flour and salt and mix until no dry streaks remain. do the same for the matcha and strawberry doughs in separate bowls

place one portion of the dough between two pieces of parchment paper and roll into a 5 x 9-inch rectangle that is about 1/4-inch thick. slide rolled out dough onto a baking sheet and freeze for 10 min until firm. repeat this step with the other portions of dough

remove the top piece of parchment from each slab and stack the strawberry, vanilla, and matcha dough layers. cut the slab down the middle the long way to form two 2.5 x 9-inch rectangles. with one half, carefully swap the order of the layers (example: if the first half of the dough is stacked svm, swap the second half so it’s msv. this will ensure that same flavour squares don’t stack on each other). stack the halves. press the layers gently to adhere them. return the stacked dough to the freezer for another 10min

[recipe cont’d in comments]

#christmasbaking #christmascookies #holidaybaking #holidaycookies #cookiedecorating
day 1: rudolph rings 🦌✨ piped butter cookies day 1: rudolph rings 🦌✨

piped butter cookies are some of my fav cookies to make — they’re buttery! sandy! rich! they get a little holiday makeover and become the cutest rudolph rings when you add a little red m&m nose and antler details. topping the antlers with gold is optional, but adds extra sparkle and festive cheer to each cookie

(makes 12 cookies)
135 g salted butter, very soft
45 g icing sugar
100 g flour
40 g cornstarch
15 g cocoa powder 
1/4 tsp espresso powder 

in a medium bowl, combine softened salted butter with icing sugar with a rubber spatula until smooth

in a separate bowl, whisk together flour, cornstarch, cocoa powder, espresso powder, and salt

using a rubber spatula, fold in the dry ingredients into the butter-sugar mixture until no more dry spots remain

transfer the dough into a piping bag fitted with a large open star tip (i used wilton 6b)

apply pressure to pipe the dough onto the prepared baking sheet. if you are having trouble piping out the dough, you can warm up the dough in the piping bag between the palms of your hands, or add an extra 1 tbsp of melted butter to the dough and refill the piping bag. leave 1 inch between each cookie

transfer the sheet of piped cookies to the freezer while you preheat the oven to 325f. chilling the dough will prevent the cookies from spreading in the oven

bake the cookies until the bottoms are set, about 25 – 30 minutes

allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a cooling rack to cool completely and decorate

royal icing
1 egg white
150 g icing sugar
1/4 tsp vanilla extract 

in the bowl of a stand mixer or large mixing bowl, beat egg whites on medium-low speed until frothy, about 1 min. with the mixer on low speed, slowly add icing sugar and vanilla. once incorporated, increase speed to medium-high and beat until stiff peaks form. transfer icing to a pip bag with a small round tip to pipe out face details

#holidaybaking #christmascookies #christmascookie #holidaycookies #christmasbaking
sorry i cant come to the phone right now, i’m to sorry i cant come to the phone right now, i’m too busy baking all the @nytcooking holiday cookies the day they’re released

@csaffitz bûche de noël cookies
@samanthaseneviratne ginger cheesecake cookies
@heysueli matcha-black sesame shortbreads
@ericjoonho lemon-turmeric crinkle cookies
@clarkbar iced peppermint cookies
@sohlae holiday rocky road
@vaughn rum-buttered almond cookies

#nytcooking #nytcookieweek #nytcookies #holidaybaking #christmascookies
presenting: this year’s 12 days of christmas coo presenting: this year’s 12 days of christmas cookies 🎄

matcha christmas tree cookies 
chocolate reindeer cookies
matcha strawberry neapolitan checkerboard
hojicha walnut deer cookies (with a bow!)
hedgehog hazelnut praline shortbread
pretzel shortbread mittens
earl grey decorated wreath cookies 
snowman cookie butter truffles
grinchy pistachio jammy liners
eggnog brûlée cookies
biscoff snowman cookies
chestnut hazelnut praline sandwich cookies

…dropping tomorrow! stay tuned!

#christmasbaking #christmascookies #holidaybaking #holidaycookies #cookiedecorating
preparing for the big weekend… ✨ a tradition preparing for the big weekend… ✨

a tradition that i started in 2019, this will be the sixth year i bake all of the @nytcooking holiday cookies the moment they are released on dec 1. i’m excited/nervous for sunday (i might throw up). here are the cookies from previous years, and a few behind the scenes where you can witness me slowly lose my sanity.

2019: twelve cookies by @susanspungen
peppermint stripe cookies
color-field cookies
peanut shortbread with honeycomb
gingery brownie crinkle cookies
marbled tahini cookies
homemade pocky
abstract art cookies
stamped citrus shortbread
brown sugar-anise cookies
thumbprints with dulce de leche
blood orange poppyseed window cookies
dirty chai earthquake cookies

2020:
cornmeal lime shortbread fans
sparkly gingerbread
vanilla bean spritz cookies
toasted almond snowballs
honey-roasted peanut thumbprints
black and white brownies 
fudgy bourbon balls
cherry rugelach with cardamom sugar

2021: the year that @nytcooking released 24 holiday cookie recipes and i almost passed out/away
m&m cookies
almond spritz cookies
peppermint brownie cookies
brown-butter toffee sandwich cookies
hibiscus-spiraled ginger cookies
guava and cream cheese twists
minty lime bars
chewy gingerbread
savory mixed-nut shortbread
tahini thumbprints with dulce de leche
chocolate babka rugelach
fruity meltaways
iced oatmeal cookies
spiced orange crumble cookies
peanut butter cookies
gingerbread biscotti
cheddar cheese coins
fig and cherry cookie pies
italian rainbow cookies
chocolate-cherry ginger cookies
hindbaersnitter
no-bake chocolate clusters
torticas de morón
piparkakut

2022:
white chocolate macadamia nut cookies
gochujang caramel cookies
chocolate hazelnut cookies
gingerbread latte cookies
orange, pistachio and chocolate shortbread
crunchy coconut twists
savory shortbread with olives and rosemary

2023: last year’s seven cookies which was done after ten hours of baking
gingerbread blondies
mexican hot chocolate cookies
rainbow rave cookies
lemon butter curls
matcha latte cookies
technicolor cookies
neapolitan checkerboard

#nytcooking #nytcookies #nytcookieweek #christmascookies #holidaycookies

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