Garlic Green Beans with Soy Sauce and Red Onion
Garlic green beans with soy sauce & red onion—an easy, flavorful side dish with simple ingredients and the best flavor.

Green beans are one of those timeless vegetables that fit seamlessly into almost any meal. They’re crisp, bright, and versatile, pairing well with both everyday weeknight dinners and special holiday spreads. This Garlic Green Beans with Soy Sauce and Red Onion recipe is the perfect side dish when you want something flavorful but simple. Using just a handful of common ingredients, this dish transforms a regular bag of fresh green beans into something truly memorable.
What makes this recipe shine is the balance of texture and flavor. The bright green color of the beans stays intact thanks to the quick blanching step, while the sweetness of the caramelized onion complements the savory soy sauce mixture and hint of garlic. Whether you’re a fan of lots of garlic or prefer just a touch, the beauty of this recipe is its flexibility. It’s an easy way to create a flavorful green bean dish that feels fresh and satisfying.
Why You’ll Love This Recipe
This green beans recipe is the definition of fuss-free cooking. With only a few simple ingredients you probably already have in your pantry, you can whip up the best green beans side dish in less than 20 minutes. It’s perfect for busy weeknights when you don’t want to spend hours in the kitchen but still want to serve something delicious alongside your main courses.
Another reason to love this dish? It’s endlessly customizable. If you enjoy a bit of heat, sprinkle in some red pepper flakes or chili flakes. For an extra nutty depth, drizzle a touch of sesame oil and finish with a handful of sesame seeds. If you’re curious about experimenting with different cooking oils, try swapping in peanut oil for the olive oil—it adds a slightly roasted note that enhances the dish. Whether you’re serving it at the dinner table with chicken, fish, or tofu, or pairing it with a holiday roast, this recipe will quickly become your go-to side dish recipe.

A Breakdown of the Ingredients
- 1 lb fresh string beans, trimmed – You can use regular green beans or French green beans (haricots verts). The fresher the beans, the more vibrant the flavor and texture. A good green bean should be crisp and snap easily when bent.
- 1–2 tablespoons olive oil – The base for sautéing. It brings out the sweetness of the onion. For variety, substitute with peanut oil or finish with sesame oil for a nutty flavor boost.
- ½ red onion, thinly sliced – Adds color and a natural sweetness when lightly caramelized. This ingredient takes the beans from basic to gourmet.
- ½ teaspoon garlic powder (or 2 cloves fresh garlic, minced) – Essential for garlic lovers. Fresh garlic adds more punch, while powder gives a mellow, rounded flavor.
- 1–2 tablespoons soy sauce – The star of the soy sauce mixture, providing saltiness and umami. Adjust to taste for the best flavor.
- Salt, to taste – A pinch of sea salt enhances the natural sweetness of the beans and balances the soy sauce.
Optional flavor boosters: red pepper flakes, chili flakes, garlic sesame oil, or sesame seeds for crunch.
How to Make the Recipe
- Blanch the beans
Start by bringing a large pot of salted water to a boil. Add the trimmed beans and cook for 3–5 minutes, just until they’re tender but still have that bright green color. This step helps preserve both texture and flavor. Drain the beans and set them aside in a large bowl. - Cook the onion
In a large skillet, heat the olive oil over medium heat. Add the sliced red onion and cook for 3–4 minutes until softened and just starting to become a caramelized onion. This step adds a natural sweetness that’s the best part of the cooking process. - Combine and flavor
Add the blanched green beans to the skillet along with the garlic (fresh or powder) and the soy sauce mixture. Toss everything together over medium high heat so the beans soak up the flavor. Scrape the bottom of the pan with your spatula to ensure all those delicious bits coat the beans.

- Final touches
Cook for another 2–3 minutes. Taste and adjust seasoning with extra soy sauce, sea salt, or a drizzle of sesame oil. For heat, sprinkle in red pepper flakes or chili flakes. Serve hot as the perfect side dish.

How to Store the Recipe
These flavorful green beans are best enjoyed fresh, but if you have leftovers, store them in an airtight container in the refrigerator for up to 3 days. To reheat, place them in a large skillet with a drizzle of hot oil over medium heat, stirring until warmed through. This method helps revive their texture better than the microwave.
If you want to prep ahead, you can blanch the beans earlier in the day and keep them in the fridge. When it’s time to serve, quickly sauté them with the onion, garlic, and soy sauce for the best flavor and texture.
Tips for Making the Recipe
- Don’t skip the blanching step—it keeps the beans’ bright green color and tender-crisp bite.
- For extra flavor, toast sesame seeds in a dry skillet until golden and sprinkle them on top before serving.
- If you love much garlic, add both fresh garlic and garlic powder for a layered flavor.
- The easy way to make this dish your own is to experiment with oils—olive oil, peanut oil, or garlic sesame oil each bring something unique.
- Use a wide large skillet so the beans sauté evenly without steaming.
- If the beans look too soft, reduce the initial boil time next time—you want a firm, crisp bite for the best green beans.
- Deglaze the bottom of the pan with a splash of water or broth if the onions stick too much during caramelization.
This Garlic Green Beans with Soy Sauce and Red Onion recipe takes simple ingredients and turns them into something that’s flavorful, versatile, and easy to love. With its bright green color, savory-sweet balance, and endless customization options, it’s one of the best green bean recipes you’ll keep coming back to. The next time you’re looking for a simple side dish that doesn’t skimp on flavor, this one deserves a spot on your dinner table.
Pair with These Main Dishes






FAQs
Yes, but they won’t have the same crispness as fresh. Thaw and pat them dry before sautéing.
French green beans are thinner and more delicate, cooking faster than regular green beans. Either works for this recipe.
You can substitute tamari (for gluten-free) or coconut aminos for a slightly sweeter flavor.
Not unless you add a lot! A small pinch of chili flakes adds warmth without overpowering the dish.
These beans pair beautifully with roasted chicken, salmon, tofu stir-fries, or holiday roasts. They’re a flexible simple side dish for almost any meal.
Yes. Blanch the beans ahead and refrigerate them. Complete the cooking process with onion, garlic, and soy sauce right before serving for the best part—that fresh, flavorful finish.

Garlic Green Beans with Soy Sauce and Red Onion
Ingredients
- 1 lb fresh green beans trimmed
- 1 Tbsp olive oil
- 1/2 red onion thinly sliced
- 2 cloves garlic minced
- 1 Tbsp soy sauce
- salt to taste
Instructions
- Bring a pot of salted water to a boil. Add string beans and cook 3–5 minutes, until just tender but still bright green. Drain and set aside.
- In a large skillet, heat olive oil over medium heat. Add the sliced red onion and cook 3–4 minutes until softened and lightly caramelized.
- Add the green beans, garlic powder, and soy sauce. Toss to coat evenly.
- Cook another 2–3 minutes, letting the beans soak up the flavor. Taste and adjust seasoning with more soy sauce or salt if needed.
- Serve hot as a side dish.