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

Updated: Apr 20, 2026 · 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
  • 📖 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,
the last fruits shared with the birds, each berry picked with care.

The tips of blossoms, colors along the stems, the soft give beneath my fingers—
whether they are sweet remains a secret until the first bite.

The tart comes together, piled high with these summer jewels,
a small reward for 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 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: Fresh blueberries work best here.
  • No-bake cocoa oatmeal crust: A simple vegan crust made with ripe banana and coconut oil, set in the fridge without baking.
  • Vegan soy custard: Lightly sweet and rich with kudzu starch, pairing well with blueberries.

🥣 How to Make

The crust softens quickly in humid conditions or once filled, so 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 plate.
Stir the chilled vegan custard until smooth and creamy.
  1. Smooth the custard:
    Stir the vegan custard until smooth and spreadable.
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.
    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 absorbs moisture easily, it’s best eaten soon after filling. The crust will soften by the next day.

▶︎ Next day or later
Store in a container with a lid. Lining it with parchment paper makes it easier to lift the tart out.

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

📖 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 — strawberries work well too.
🍓Strawberry version → Strawberry Custard Tart Recipe (Vegan & No-Bake)

➤ 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 pat dry with paper towels to prevent excess moisture.

Other fruits?

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

Kudzu substitution?

Cornstarch can be used instead, though the texture and flavor will be slightly lighter.

Make-ahead?

Prepare the crust and custard separately, and assemble just before serving.

Less sweet?

Adjust to taste. A less sweet version pairs well with tea or coffee.

👒 Enjoying the Bananas

If you have leftover bananas from the tart crust…

  • Freshly steamed Japanese banana mochi, soft and tender
    Japanese Steamed Banana Mochi|3 Ingredients, No Sugar, Vegan
  • firmly set, No-Bake Oatmeal Tart Crust, Cocoa-Flavored
    No-Bake Oatmeal Tart Crust – Vegan & Gluten-Free
  • 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 (👉 Full list).

  • Vegan strawberry custard tart with no-bake oat crust
    Strawberry Custard Tart Recipe (Vegan & No-Bake)
  • Vegan sweet potato ice cream made with roasted Japanese sweet potatoes(yakiimo) and coconut milk on a plate.
    Vegan Sweet Potato Ice Cream with Baked Japanese Sweet Potatoes
  • Vegan sweet potato montblanc cream in a white bowl - silky and creamy yakiimo paste
    Vegan Japanese Sweet Potato Montblanc Cream (Yakiimo Paste)
  • Korean sweet potato latte (goguma latte) in a mug made with baked Japanese sweet potato and soy milk
    Korean Sweet Potato Latte (Goguma Latte)

✏️ 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 Vegan Soy Milk Custard thickened with kudzu starch and a cocoa-flavored, No-Bake Oat 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 Oat Tart Crust (10cm square pan)
  • ~150 g Vegan Soy Milk Custard
  • Fresh blueberries (as needed)

Instructions
 

  • Prepare the tart shell: Carefully remove the chilled no-bake oatmeal tart crust from the tin and transfer it to a plate.
    1 No-Bake Oat Tart Crust
  • Smooth the custard: Stir the chilled vegan soy custard until smooth.
    ~150 g Vegan Soy Milk Custard
  • Fill the tart: Spread the custard evenly over the tart shell.
  • Decorate: Top generously with washed and drained fresh blueberries.
    Fresh blueberries
  • Serve: Enjoy with your favorite drink.

Notes

  • Best eaten the same day once filled.
  • If storing for the next day, keep the 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

If this recipe was helpful....

♡ Support

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