Bún Riêu (Vietnamese Crab Noodle Soup, 30 Minute Version)

Bun rieu is one of those Vietnamese noodle soups that’s light but deeply flavorful. Tangy tomato broth, soft rice vermicelli, and fluffy crab meatballs floating on top. It’s comforting without being heavy and perfect when you want something warm and slurpable.

Traditional bun rieu can take time, especially when you’re making broth from scratch and tracking down every specialty ingredient. This version is a streamlined, homestyle take that still delivers the flavors people love, just in a way that fits into a regular weeknight.

Is it fully traditional? No.
Does it taste like bun rieu and hit the spot when the craving strikes? Absolutely.

Why This Quick Bun Rieu Works

This recipe keeps the soul of bun rieu without requiring an all-day simmer.

It comes together in about 30 minutes, uses a few smart shortcuts, and still gives you that balance of savory, tangy, and slightly sweet broth. The crab mixture cooks directly in the soup, forming those signature fluffy “clouds” without extra steps.

If you enjoy Vietnamese noodle soups like pho tai, bun bo hue, or mien ga, this is a lighter option to add to your rotation.

What Is Bun Rieu?

Bun rieu is a Vietnamese noodle soup made with a tomato-based broth and rice vermicelli noodles. It’s topped with a crab and egg mixture that gently cooks in the broth and floats to the surface.

Many traditional versions include pork bones, fresh crab, fermented shrimp paste, and sometimes snails. This version leans more homestyle and accessible, while still keeping the core flavors that define bun rieu.

Crab Paste or Shrimp Paste?

You can use crab paste, shrimp paste, or a combination of both. It really comes down to what you can find and what you enjoy.

I like using both when possible. Crab paste gives sweetness and body, while shrimp paste adds depth and that unmistakable bun rieu flavor. I also use the oil from the shrimp paste to sauté the tomatoes, which helps give the broth its signature color.

Some reliable options you might see at the store include Por Kwan minced crab in spices or Super Brand shrimp paste with soybean oil. Use what’s available and adjust to taste.

• #1 Por Kwan Minced Crab in Spices – Mild, sweet, and smooth with visible bits of onion.
• #4 Super Brand Shrimp Paste with Soybean Oil – Well-balanced, not too fishy, and great for depth.
• #5 Por Kwan Minced Crab in Spices (canned) – Well-seasoned with a slight kick from chili.

Ingredients Overview

Please scroll ⬇️ to the recipe card for the full ingredient amounts and instructions.

This shortcut bun rieu uses pantry-friendly ingredients alongside a few Vietnamese staples.

The broth is built from chicken broth, water, fish sauce, bouillon powder, sugar, and tomatoes. Shallots or onion add aroma, and shrimp paste oil or paprika adds color.

The riêu mixture combines ground pork, shrimp, dried shrimp, crab paste, crab meat, and eggs. The key is balance. You want the mixture moist but not runny so it holds together in the broth.

Rice vermicelli noodles form the base, with optional toppings like fried tofu, bean sprouts, herbs, and greens to finish the bowl.

**Pro Tip: For fluffy, tender crab meatballs, aim for a balanced texture—equal parts solids (pork, shrimp, crab) to liquids (crab paste, eggs). The mixture should be moist but not runny; if it’s too thin, the meatballs won’t hold their shape in the broth.

Vermicelli Noodles and Toppings

Small rice vermicelli noodles are traditional for bun rieu. Cook them separately so they don’t cloud the broth. My how to cook rice noodles post breaks down the best way to handle vermicelli so they stay tender and don’t turn mushy.

Toppings are where you can really make the bowl your own. Fried tofu, shredded cabbage, bean sprouts, rau muong, mint, Thai basil, and perilla leaves all work well.

Some people like to add a little mam tom on the side or directly into their bowl. Start small if you’re new to it.

How to Make Bun Rieu (Overview)

Start by rehydrating the dried shrimp and prepping the fresh shrimp. These go into the riêu mixture along with pork, crab paste, crab meat, and eggs.

Bring the broth to a gentle simmer while you sauté the aromatics and tomatoes separately. Cooking the tomatoes first helps deepen their flavor before they go into the soup.

Once the broth is seasoned and the tomatoes are added, gently scoop spoonfuls of the crab mixture into the pot. Let them cook undisturbed so they form soft, fluffy clusters.

Cook the noodles separately and assemble each bowl with noodles first, then broth, crab meatballs, and tomatoes. Finish with toppings and lime.

Exact measurements and timing are in the recipe card below.

How to Serve

Start with cooked vermicelli noodles in each bowl, then ladle the hot broth over the top, making sure to include plenty of crab meatballs and tomatoes.

Add fried tofu, bean sprouts, fresh herbs, and vegetables like morning glory (rau muong) or shredded cabbage. Finish with lime wedges and chili sauce so everyone can adjust their bowl to taste.

If you’re building a Vietnamese noodle spread, bun rieu pairs nicely with dishes like bun thit nuong or bun cha.

Storage and Reheating

Store the broth and crab meatballs separately from the noodles and fresh toppings.

Refrigerate in an airtight container for up to 3 days. Reheat gently on the stove until just simmering.

You can freeze the broth and crab meatballs for up to 1 month. Thaw overnight and reheat before serving. Cook noodles fresh when ready to eat.

Make It and Customize Your Bowl

This quick bun rieu may not follow every traditional step, but it delivers the flavors most people are craving. Tangy broth, fluffy crab, and a bowl you can customize exactly how you like it.

If you try this recipe, leave a comment and let me know how you topped your bowl. And if it’s one you’ll want to make again, save it on Pinterest so it’s easy to come back to later.

RECIPE