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Home » Vegan Recipes

Japanese Red Bean Oatmeal (Adzuki Bean Porridge with Soy Milk)

Updated: Apr 20, 2026 · Published: Mar 19, 2024 by Vegin Vegan Vegun! · This post may contain affiliate links · 1 Comment

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🇯🇵日本語で読む

A creamy, lightly sweet Japanese red bean oatmeal — ready in 5 minutes.

Japanese red bean oatmeal in a bowl, protein packed vegan breakfast

If you've never thought to add red beans to your morning oatmeal, this recipe might change that.
A small amount of cooked adzuki beans stirred into oats with soy milk makes a simple, satisfying breakfast — lightly sweet, creamy, and surprisingly filling.

It comes together in about 5 minutes, and with roughly 14g of protein per serving, it keeps you going through the morning.
I often cook a batch of adzuki beans on the weekend and keep them in the fridge or freezer — so they’re ready to use in minutes on busy weekday mornings.

If you're new to adzuki beans, you can find more about them in the ingredients section below.

Jump to:
  • 🫘 Ingredients
  • 🥣 Instructions
  • 🥄 Top Tip
  • 📚 FAQ
  • 🌾 More Oatmeal Recipes
  • 🍡 More Adzuki Beans Recipes
  • 📖 Recipe Card

🫘 Ingredients

ingredients for red bean oatmeal — adzuki beans, oats, and soy milk
  • Unsweetened cooked adzuki beans (👉 how to cook them)
  • Quick oats or instant oats
  • Unsweetened soy milk
  • Cinnamon (optional)

About Adzuki Beans

Adzuki beans (also written as azuki) are small red beans widely used in Japanese and East Asian cooking, most often in sweet recipes like ohagi (sweet red bean paste rice balls), daifuku (sweet red bean paste mochi), oshiruko (a sweet red bean soup with mochi)

They have a mild, earthy sweetness that works really well with oats and soy milk.

I use unsweetened cooked adzuki beans here so you can adjust the sweetness to your liking.
If you'd like to prepare them from scratch, I’ve also shared a simple guide for cooking dried adzuki beans. You can also use store-bought cooked adzuki beans to make things easier.

unsweetened cooked adzuki beans

I sometimes use adzuki beans to create a chocolate-like flavor, combining them with prunes and cocoa powder. It may sound unexpected, but together they create something surprisingly rich and chocolatey — without using dairy or chocolate.

📖See recipes → No-Bake Vegan Salted Chocolate Rosemary Oat Cookies, Vegan Chocolate Frosting, Vegan Nama Chocolate Truffles

▼ More adzuki bean recipes

  • Salted Chocolate Rosemary Cookies, no bake vegan cookies topped with salt and fresh rosemary
    No-Bake Vegan Salted Chocolate Rosemary Oat Cookies
  • Oshiruko (Japanese sweet red bean soup) topped with shiratama dumplings
    Oshiruko Recipe (Japanese Sweet Red Bean Soup / Zenzai)
  • vegan chocolate frosting made with adzuki beans, piped smoothly in a bowl, coconut cream-free and soy-free
    Vegan Chocolate Frosting with Adzuki Beans
  • A bowl of patjuk, Korean sweet red bean porridge made with glutinous rice
    Patjuk (Korean Red Bean Porridge) – Easy Rice Cooker Recipe

Full quantities are listed in the recipe card below 👇

🥣 Instructions

Ready in about 5 minutes!

all ingredients for red bean oatmeal added to a pot
  1. Cook
    • Add all the ingredients to a small pot and place it over low heat.
    • Stir continuously with a spatula, scraping the bottom to prevent sticking.
Japanese red bean oatmeal cooked to a creamy consistency
  1. Serve
    • Once it reaches your preferred consistency, remove it from the heat.
    • Sweeten to taste, then top with adzuki beans and a sprinkle of cinnamon, if you like.
a bowl of creamy Japanese red bean oatmeal, quick and easy vegan breakfast

🥄 Top Tip

Oatmeal thickens as it cools, so take it off the heat just before it reaches your preferred consistency.

📚 FAQ

How much protein is in one serving?

With 30g of oats (about 5g of protein), 100ml of unsweetened soy milk (about 7g), and 40g of cooked adzuki beans (about 2g), one serving contains roughly 14g of protein.

Can I use something other than adzuki beans?

Raisins or chopped nuts work well as substitutes. A sprinkle of cinnamon on top also works nicely.

🌾 More Oatmeal Recipes

My favorite oatmeal recipes:

  • firmly set, No-Bake Oatmeal Tart Crust, Cocoa-Flavored
    No-Bake Oatmeal Tart Crust – Vegan & Gluten-Free
  • Salted Chocolate Rosemary Cookies, no bake vegan cookies topped with salt and fresh rosemary
    No-Bake Vegan Salted Chocolate Rosemary Oat Cookies

🍡 More Adzuki Beans Recipes

Ways to use up leftover cooked adzuki beans:

  • Salted Chocolate Rosemary Cookies, no bake vegan cookies topped with salt and fresh rosemary
    No-Bake Vegan Salted Chocolate Rosemary Oat Cookies
  • Oshiruko (Japanese sweet red bean soup) topped with shiratama dumplings
    Oshiruko Recipe (Japanese Sweet Red Bean Soup / Zenzai)
  • vegan chocolate frosting made with adzuki beans, piped smoothly in a bowl, coconut cream-free and soy-free
    Vegan Chocolate Frosting with Adzuki Beans
  • A bowl of patjuk, Korean sweet red bean porridge made with glutinous rice
    Patjuk (Korean Red Bean Porridge) – Easy Rice Cooker Recipe

If you feel like whispering a thought, asking a question, or simply saying hello — the comment section is always open 📮

📖 Recipe Card

a bowl of creamy Japanese red bean oatmeal, quick and easy vegan breakfast

Japanese Red Bean Oatmeal (Adzuki Porridge with Soy Milk)

by Vegin Vegan Vegun!
A simple 5-minute breakfast made with oats, soy milk, and cooking adzuki beans.
Warm, creamy, and quietly comforting — something that also works well as a light snack.
Sweeten to your liking.
5 from 1 vote
Print Recipe Pin Recipe
Cook Time 5 minutes mins
Total 5 minutes mins
Course breakfast, snacks
Cuisine American
Servings 1 people

Equipment

  • pot
  • Spatula

Ingredients
  

Oatmeal Base

  • 5 tablespoon instant oats (30g)
  • 100 ml water
  • 2 tablespoon cooking adzuki beans (40g, unsweetened)
  • 100 ml unsweetened soy milk

To Finish

  • 2 teaspoon sugar (to taste)
  • cinnamon powder (to taste)
  • cooked adzuki beans (to taste)

Instructions
 

  • Add all the base ingredients to a small pot and place over low heat.
    5 tablespoon instant oats
    100 ml water
    2 tablespoon cooking adzuki beans
    100 ml unsweetened soy milk
  • Stir continuously, scraping the bottom to prevent sticking.
  • Cook until it reaches your preferred consistency. (It will thicken slightly as it cools.)
  • Remove from the heat. Sweeten to taste, then top with adzuki beans and cinnamon, if desired, and serve.
    2 teaspoon sugar
    cinnamon powder
    cooked adzuki beans
Keyword adzuki bean dessert, adzuki bean recipe, cooked adzuki beans, red bean oatmeal

If this recipe made its way into your kitchen, and you'd like to share that moment, feel free to tag @veginveganvegun or use #vegin_vegan_vegun.
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Support

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♡ Support

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Comments

  1. アンコ says

    March 19, 2024 at 10:04 pm

    5 stars
    簡単!

    Reply

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