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Home » Vegan Recipes

Vegan Blueberry Custard Tart|No-Bake Oatmeal Crust & Soy Custard

Updated: Sep 8, 2025 · Published: Aug 31, 2025 by Vegin Vegan Vegun! · This post may contain affiliate links · Leave a Comment

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🇯🇵日本語で読む

Made entirely with gentle, plant-based ingredients, this vegan blueberry tart is a little indulgence for one—or a quiet treat for two to share.

Vegan no-bake blueberry tart with kudzu custard and oatmeal crust, served on a plate with a strong cup of tea — perfect for a calm tea-time moment.

A creamy soy custard fills a no-bake oatmeal tart crust, and the sweet-tart blueberries crown the top, creating a soft, harmonious melody in every bite.

Perfect for a slow, unhurried moment of the day.

Jump to:
  • 🫐 Journal from the Summer Kitchen
  • 🧺 About this Recipe
  • 🌿 Ingredients
  • 🥣 How to Make
  • 🧊 Storage
  • 📖 Kitchen Notes | Quiet Moments & Subtle Changes
  • 📚 FAQ
  • 👒 Enjoying the Bananas
  • ☀️ When dessert calls
  • ✏️ Recipe Card|Printable

🫐 Journal from the Summer Kitchen

The blueberry bushes in the garden, nearing the season’s end,
last fruits shared with the birds, each berry picked with care.

Tips of blossoms, colors along the stems, the soft give beneath my fingers—
whether sweet remains a secret until the very first bite.

The tart rises, piled high with these summer jewels,
a small reward after enduring the summer heat.

A book rests open, notes waiting on the page, music weaving through the air;
this moment drifts slowly, unfolding just for me.

Leftover berries become another tart,
shared softly, a quiet joy with someone dear.

Grateful for each of the last berries of the season,
sharing happiness as one does with birds—and with people.

Enjoying a vegan no-bake blueberry tart with tea, during quiet solo moments of reading or listening to music.

🧺 About this Recipe

  • A tart that celebrates the natural sweet-tartness of blueberries.
  • Custard made with kudzu starch, yielding a rich, thick, comforting cream.
  • Light on sugar and fat, gentle on the body.
  • Vegan, vegetarian, and gluten-free-friendly dessert.

🌿 Ingredients

Just enough for one generous serving, or two small portions to share.

Ingredients for vegan no-bake blueberry tart: fresh blueberries, no-bake cocoa oatmeal crust, and vegan soy custard.

For one tart (Noda enamel square S, 10.6×10×5.4 cm):

  • Blueberries: preferably fresh.
  • No-bake cocoa oatmeal crust: A simple vegan crust made with ripe bananas and coconut oil; sets in the fridge without baking.
  • Vegan soy custard: Mildly sweet, thick, and rich thanks to kudzu starch; pairs beautifully with blueberries.

🥣 How to Make

The crust can get soft quickly — it’s best to assemble just before eating.

Remove the chilled tart base from the mold and transfer it to a serving plate.
  1. Prepare the tart base:
    Remove the chilled tart from the mold and place it on a serving dish.
Stir the chilled vegan custard until smooth and creamy.
  1. Smooth the custard:
    Stir the vegan custard well to make it silky and smooth.
Fill the tart shell generously with the silky vegan custard.
  1. Fill the tart:
    Spoon the custard generously into the tart shell.
Top the tart with plenty of washed and drained fresh blueberries.
  1. Top with blueberries:
    Pile on the washed and drained blueberries generously.
    Brew a strong cup of tea and enjoy a quiet moment.
Vegan blueberry tart filled generously with rich soy custard.

🧊 Storage

▶︎ Same day
Because the no-bake crust is prone to moisture, it’s best eaten immediately after filling. The crust will become denser if stored overnight.

▶︎ Next day or later
Store in a container with a lid; for easier removal, line with a large sheet of parchment paper.

Cross-section of a no-bake oatmeal tart filled with creamy vegan custard and fresh blueberries.

📖 Kitchen Notes | Quiet Moments & Subtle Changes

🍋Add a touch of summer: Grated lemon zest and juice in the custard brighten the tart.

🍌Flexible toppings: Swap blueberries for seasonal berries or sliced banana.

🍃For solo time: Perfect for afternoons listening to rain or music, letting the moment linger.

Vegan blueberry tart, perfect for sharing during tea-time, accompanied by two cups of tea.

📚 FAQ

Frozen blueberries?

Thaw and gently drain with paper towels to avoid a watery custard.

Other fruits?

Seasonal fruits like raspberries, blackberries, or thinly sliced peaches also work beautifully.

Kudzu substitution?

Cornstarch can replace kudzu, but texture and subtle flavor will be lighter.

Make-ahead?

Prepare crust and custard separately; assemble before serving.

Less sweet?

Adjust to taste. Slightly less sweet enhances pairing with tea or coffee.

👒 Enjoying the Bananas

If you have leftover bananas from the tart crust…

  • Chewy vegan banana shiratama dumplings served with refreshing ginger syrup — a light Japanese summer dessert.
    Chewy Vegan Banana Shiratama | Summer Dessert with Ginger Syrup
  • Shiratama Anmitsu topped with special homemade kuromitsu (black sugar syrup) – a vegan Japanese dessert
    Vegan Shiratama Anmitsu with Homemade Kuromitsu (black sugar syrup)

☀️ When dessert calls

Gentle sweetness, comforting to the heart, reflecting the season’s breeze.

  • Vegan Korean cabbage pancake (Baechu Jeon) on a plate, golden and crispy, ready to serve as a cabbage side dish
    Vegan Korean Cabbage Pancake (Baechu Jeon)
  • Easy butternut squash recipe made as a Korean vegetable pancake, served with a simple dipping sauce
    Vegan Butternut Squash Korean Pancake (Hobak Jeon)
  • Vegan Japanese-style lentil soboro simmered with sweet and savory flavors, made from red lentils.
    Red Lentil Soboro (Japanese Crumbled Lentils) 
  • Plump, glossy osechi kuromame (Japanese sweet black beans) with beautiful sheen
    Osechi Kuromame (Japanese Sweet Black Soybeans) - Pressure Cooker Recipe

✏️ Recipe Card|Printable

Vegan no-bake blueberry tart with kudzu custard and oatmeal crust, served on a plate

Vegan Blueberry Tart|Kudzu Soy Custard & No-Bake Oatmeal Crust

by Vegin Vegan Vegun!
A vegan blueberry tart made with rich, creamy soy custard thickened with kudzu starch and a cocoa-flavored, no-bake oatmeal tart crust. Lightly sweet and gently tart, perfect with a cup of tea.
Print Recipe Pin Recipe
Prep Time 10 minutes mins
Total 10 minutes mins
Course dessert, Vegan Sweets
Cuisine Fusion, Vegan Treats
Servings 2 people

Equipment

  • Spoon
  • rubber spatula
  • Refrigerator

Ingredients
  

  • 1 no-bake cocoa oatmeal tart crust (10cm square pan)
  • ~150 g vegan soy custard
  • Fresh blueberries (as needed)

Instructions
 

  • Prepare the tart shell: Carefully remove the chilled no-bake oatmeal tart crust from the pan and transfer it to a plate.
    1 no-bake cocoa oatmeal tart crust
  • Smooth the custard: Gently stir the chilled vegan soy custard with a spoon until smooth.
    ~150 g vegan soy custard
  • Fill the tart: Spread the custard evenly over the tart shell.
  • Decorate: Top generously with washed and drained fresh blueberries.
    Fresh blueberries
  • Finish & serve: Pour your favorite beverage and enjoy together with a quiet moment.

Notes

  • Best eaten the same day after filling.
  • If storing for the next day, keep custard and tart shell separate and assemble just before serving.
  • Seasonal fruits or other berries can be used as substitutes.
Keyword blueberry tart, gluten-free, healthy vegan dessert, kudzu custard, no-bake tart crust, oatmeal crust, vegan tart crust

Support

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