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You can microwave string beans and have them ready in just a few minutes.
Fresh string beans, also called green beans, snap beans, or haricots verts, microwave beautifully when you add a splash of water and cover them.
It’s one of the fastest, easiest ways to get a healthy side dish on the table without firing up the stove.
In this post, we’ll walk through exactly how to microwave string beans, how long they need, and how to season them so they actually taste great.
Let’s get right into it.
How to Microwave String Beans the Right Way
Learning how to microwave string beans starts with a few simple steps.
Here’s the whole process broken down so your string beans come out crisp-tender every single time.
1. Wash and Trim Your String Beans
First, rinse your string beans under cold running water.
Pat them dry with a clean towel or paper towel.
Then snap or cut off the stem ends.
If you see any strings running down the seam, just pull them off.
You can leave the beans whole or cut them into bite-sized pieces, whichever you prefer.
2. Add a Little Water
Place your string beans in a microwave-safe bowl.
Add about two to three tablespoons of water.
The water creates steam, and steam is what cooks the string beans gently and evenly.
Don’t drown them, though.
Too much water will make your string beans soggy instead of crisp.
3. Cover the Bowl
Cover the bowl with a microwave-safe lid or a plate that fits snugly on top.
You can also use plastic wrap, but leave one corner vented so steam can escape.
Covering traps the steam inside, which is the whole secret behind how to microwave string beans that taste fresh, not boiled.
4. Microwave on High
Microwave your string beans on high power.
For a standard 1,000-watt microwave, one pound of fresh string beans takes about four to five minutes.
If you’re only cooking a handful, start with two to three minutes.
5. Check for Doneness
Careful, the bowl and steam will be hot.
Use oven mitts to pull the bowl out.
Stir the string beans so they cook evenly.
Then test one bean by piercing it with a fork.
It should be tender but still have a slight snap.
6. Let Them Rest and Season
Let the string beans sit covered for one minute.
This lets the residual steam finish the cooking.
Then drain any leftover water.
Toss your string beans with a little butter or olive oil.
Add salt, black pepper, and maybe a squeeze of lemon juice.
That’s it, you’ve mastered how to microwave string beans.
How Long to Microwave String Beans
Timing is everything when you microwave string beans.
Here’s a quick guide based on how many string beans you’re cooking.
1. Small Batch (One Cup)
One cup of fresh string beans needs about two to three minutes on high.
2. Medium Batch (Half a Pound)
Half a pound of string beans takes roughly three to four minutes.
3. Large Batch (One Pound)
A full pound of string beans usually needs four to five minutes.
4. Frozen String Beans
Frozen string beans take a bit longer, usually five to six minutes.
You don’t need to thaw them first, and you don’t even need to add water since ice crystals create their own steam.
5. Adjust for Your Microwave
Every microwave is different.
If your string beans aren’t tender after the suggested time, microwave them in 30-second bursts until they’re done.
Always better to undercook slightly and add time than to overcook and end up with mushy string beans.
Tips for Perfect Microwaved String Beans
Once you know how to microwave string beans, a few extra tricks will take them from good to great.
1. Don’t Skip the Cover
Without a cover, your string beans will dry out and cook unevenly.
The trapped steam is doing most of the work, so always cover the bowl.
2. Keep the Water Minimal
Two to three tablespoons is plenty.
Any more and you’re basically boiling your string beans, which drains their flavor and nutrients.
3. Season After Cooking
Add salt and pepper after the string beans come out of the microwave.
Seasoning beforehand can draw out moisture and make them limp.
Garlic powder, onion powder, or a pinch of red pepper flakes work great too.
4. Cook in Batches for a Crowd
If you’re feeding a crowd, microwave your string beans in batches rather than piling them all in one bowl.
Overcrowding leads to uneven cooking, and nobody wants half-raw, half-mushy string beans.
5. Reheat Leftovers the Same Way
Got leftover string beans?
Just pop them back in a covered microwave-safe bowl with a teaspoon of water and heat for 30 to 60 seconds.
They’ll taste almost as fresh as the first time.
So, Can You Microwave String Beans?
You can microwave string beans, and it’s honestly one of the best ways to cook them quickly.
Just wash and trim your string beans, add a splash of water, cover the bowl, and microwave on high for two to five minutes depending on the batch size.
Let them rest, drain, and season to taste.
Now that you know how to microwave string beans, you can get a healthy, delicious side dish on the table in less time than it takes to boil water.
Give it a try tonight, and enjoy your perfectly cooked string beans.