Keto Green Beans and Scallions

⏲ ~29 min total · prep 14 · cook 15 · 4 servings

By the KFI Test Kitchen · Tested & approved by Jason Lieu, KFI recipe editor

Published Sep 15, 2026 · Updated Sep 15, 2026

Ingredients

• 1 lb green beans, trimmed
• 1/4 cup water
• 2 tbsp butter
• 1 bunch scallions (6-7), cut into 2-inch pieces
• 3 cloves garlic, thinly sliced
• 1/2 tsp kosher salt
• 1/4 tsp crushed red pepper flakes
• 1 tbsp lemon juice

Instructions

1. Combine the beans and water in a wide 12-inch skillet, cover, and steam over high heat 4 minutes, until the water is gone and the beans are bright green and crisp-tender.
2. Uncover, add the butter, and once the foaming subsides sear the beans over high heat 3 minutes, tossing twice, until blistered in spots.
3. Add the scallion pieces and garlic and stir-fry 2 minutes, until the scallions wilt and char slightly at the edges and the garlic is fragrant.
4. Pull the pan off the heat and toss with the salt, pepper flakes, and lemon juice.
5. Pile into a warm bowl, scraping the buttery pan juices over the top, and serve immediately.

Why this recipe works

• Steam and sear in one pan A quarter cup of water steams the beans tender in 4 minutes, then evaporates and leaves hot butter behind for the sear. One pan does both jobs with no colander in sight.
• Charred scallions Two-inch scallion pieces wilt and char at the edges in 2 minutes, giving the pan a mild onion note in two textures. Sliced into rings they would burn before they soften.
• 2.3 net carbs A pound of green beans with butter and lemon lands at 2.3 net carbs a serving. The side dish never threatens the day's budget.

Tips for making this recipe well

Wide pan, single layer

A 12-inch skillet spreads a pound of beans flat, which is what makes the 4-minute steam and the sear possible. A narrow pan piles them and steams the bottom layer gray.

Wait until the water is gone

Searing starts only when the water has evaporated and the butter stops foaming. Beans seared in leftover water turn olive and limp.

Toss twice, no more

Three minutes of sear with two tosses builds blisters; constant stirring steams instead. Contact with the hot pan is the whole technique.

Garlic in late

Thin slices need only 2 minutes with the scallions; earlier and they burn bitter. Fragrant and blond is the finish line.

Lemon off the heat

The lemon juice goes in after the burner is off, so it sharpens instead of cooking away. Serve from a warm bowl with the pan juices poured over.

Serving suggestions

Seventeen minutes on one skillet with no colander: this is the side you start when the main course needs all the attention. At 2.3 net carbs a serving you can heap the bowl without doing math. They belong next to roast chicken or a pan steak, and they earn their place at a holiday table too, blistered and buttery among the heavier dishes. Pile them into a warm bowl and pour the buttery pan juices over at the last second; that gloss is half the dish.

Storage and meal prep

Cover and refrigerate for 3 to 4 days. The blister softens and the beans relax, so plan on eating them cold from the container, where the char and lemon read like a salad, or revived for a minute in a very hot skillet. The microwave turns them limp and gray; skip it. The freezer is not worth it here, since thawed green beans go soft and weepy and never blister again.

Variations worth trying

• Asparagus The same steam-then-sear method works with a pound of trimmed asparagus. Cut the steam to 3 minutes; asparagus cooks faster than beans.
• Toasted almonds A quarter cup of slivered almonds toasted golden in the butter before the beans go in adds crunch. Set them aside until serving so they stay crisp.
• Shallot swap Sliced shallots replace the scallions for a sweeter, softer edge. They need the same 2 minutes.
• Sesame finish Swap the butter for sesame oil and the lemon for a splash of rice vinegar. Different continent, same pan.

Frequently asked questions

Can I use frozen green beans?

Thawed frozen beans release water and never blister properly. If that is what you have, skip the steam step and saute them dry in the butter, expecting softer results.

Why did my garlic burn?

It went in too early or the pan was hotter than needed. Sliced garlic needs only the last 2 minutes, watching for blond edges.

Do I need to trim the beans?

Yes, the stem ends are woody no matter the cook time. Snap or cut them off in one pile; it takes 2 minutes for a pound.

Can I double the recipe?

Only with two skillets or two batches. A crowded pan steams instead of searing, and the whole point is the blister.

How spicy is it?

A quarter teaspoon of red pepper flakes is a low background warmth. Leave them out for a fully mild pan.

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