15 High Protein Vegetables That You May Be Underestimating

When most people think about protein, vegetables don’t come to mind. That’s understandable. No single vegetable is going to replace chicken breast in your macros. But the idea that vegetables are protein-free is a genuine misconception, and it costs a lot of people — especially those eating plant-forward or trying to squeeze more nutrition into every meal — some easy, effortless protein they’re leaving on the table.

Some vegetables deliver a surprisingly meaningful amount of protein per serving. A cup of edamame rivals three eggs. A cup of cooked green peas has more protein than a glass of milk. Even broccoli, spinach, and Brussels sprouts contribute grams you wouldn’t expect from a side dish. This list ranks the 15 highest-protein vegetables by protein per cup, explains what makes each one worth adding to your rotation, and gives you one practical way to use each one.

All protein values are sourced from the USDA FoodData Central database.

Why Vegetable Protein Matters

Protein from vegetables comes packaged with fiber, antioxidants, vitamins, and minerals that you don’t always get from animal sources. Harvard T.H. Chan School of Public Health notes that plant protein sources come with a package of other nutrients that make them healthful choices, including fiber and phytochemicals that support long-term cardiovascular and metabolic health. Adding high-protein vegetables to your meals isn’t a replacement strategy — it’s an additive one. Every gram of protein that comes bundled with micronutrients is a gram working harder for your body

15 High-Protein Vegetables Ranked by Protein Per Cup

1. Edamame — 18g per cup (shelled, cooked)

Edamame is the clear leader on this list, and it’s not close. One cup of shelled, cooked edamame delivers 18 grams of protein — comparable to three eggs. More importantly, WebMD reports that edamame is one of the only plant protein sources to contain all nine essential amino acids, making it a complete protein on par with meat and dairy. That’s exceptionally rare in the plant kingdom.

Beyond protein, edamame provides 8 grams of fiber per cup, omega-3 alpha-linolenic acid, folate, vitamin K, and isoflavones that research associates with reduced cardiovascular and cancer risk. Add it to grain bowls, stir-fries, salads, or eat it straight from the pod with a pinch of sea salt as a snack.

2. Green Peas — 8g per cup (cooked)

Green peas are one of the most underrated protein sources in any kitchen. A cooked cup delivers 8 grams of protein and nearly 9 grams of fiber, all at around 125 calories. They’re naturally sweet, affordable year-round in frozen form, and cook in minutes from frozen without any prep.

Peas are technically legumes, but they’re used universally as a vegetable in everyday cooking. Add them to pasta, blend them into soups, mix them into fried rice, or simply steam and serve as a protein-boosting side. Their fiber and protein combination also supports blood sugar stability, making them a smart choice for anyone managing insulin response.

3. Lima Beans — 7g per half cup (cooked)

Lima beans are often overlooked, but they punch well above their weight in protein. A half cup of cooked lima beans delivers 7 grams of protein and 7 grams of fiber, making a full cup an impressive 14 grams of protein. They’re also rich in potassium, magnesium, and iron — nutrients many people fall short on regardless of dietary pattern.

Their mild, buttery flavor works well in soups, succotash, grain bowls, or simply seasoned as a side. If you find them mushy from the can, dried lima beans cooked from scratch hold their shape better and have a more satisfying texture.

4. Spinach — 5.4g per cup (cooked)

Raw spinach looks impressive in a bag, but delivers much less protein per serving than cooked spinach because it compresses dramatically during cooking. One cup of cooked spinach — which started as roughly six to seven cups of raw leaves — delivers 5.4 grams of protein alongside exceptional amounts of iron, vitamin K, magnesium, and folate. The Mayo Clinic highlights leafy greens like spinach as among the most nutrient-dense foods available per calorie, providing broad micronutrient coverage that few other foods match.

Sauté spinach in olive oil and garlic as a quick side, blend it into smoothies invisibly, or fold it into scrambled eggs to stack protein from multiple sources at once.

5. Artichoke Hearts — 4.8g per cup (cooked)

Artichokes are rarely on anyone’s high-protein vegetable radar, but a cup of cooked artichoke hearts delivers 4.8 grams of protein alongside one of the highest fiber contents of any vegetable — around 10 grams per cup. That combination makes artichokes one of the most filling vegetables you can eat.

Canned artichoke hearts (packed in water, not oil) make them accessible year-round. Use them in pasta, on flatbreads, in grain bowls, blended into dips, or roasted with olive oil and garlic until the edges char slightly.

6. Asparagus — 4g per cup (cooked)

A cooked cup of asparagus delivers 4 grams of protein and is one of the few vegetables that serves as a prebiotic food, feeding beneficial gut bacteria through its inulin content. It’s also rich in folate, vitamin K, and vitamin E, with one of the highest folate concentrations of any vegetable — particularly important for women of reproductive age.

Roast asparagus spears at 400°F for 12 to 15 minutes with olive oil and salt, or grill them alongside fish or chicken. The tips caramelize slightly and develop a nutty sweetness that pairs well with eggs, salmon, and grain salads.

7. Brussels Sprouts — 4g per cup (cooked)

Brussels sprouts are a cruciferous powerhouse. A cooked cup delivers 4 grams of protein along with significant vitamin C, vitamin K, folate, and glucosinolates — the sulfur compounds that give cruciferous vegetables their cancer-protective properties. Research published in PMC found that higher intake of cruciferous vegetables is associated with reduced risk of several cancers and cardiovascular disease, driven by these bioactive compounds working alongside fiber and antioxidants.

Roast Brussels sprouts at high heat (425°F) with olive oil, salt, and a splash of balsamic vinegar until they’re deeply caramelized. This converts the bitter compounds and makes them genuinely delicious — a completely different experience from the steamed version most people grew up with.

8. Sweet Corn — 4g per cup (cooked)

Corn gets a bad reputation in low-carb circles, but it’s a genuinely nutritious whole food that contributes meaningful protein alongside thiamine, folate, vitamin C, and antioxidants including lutein and zeaxanthin, which support eye health. A cup of cooked corn delivers 4 grams of protein at around 132 calories.

Fresh corn in season is exceptional. Off-season, frozen corn works perfectly in soups, chilis, grain bowls, and egg scrambles. It’s also one of the most budget-friendly protein-contributing vegetables available year-round.

9. Broccoli — 3.7g per cup (cooked)

Broccoli is one of the most nutritionally complete vegetables in existence. Cooked broccoli delivers 3.7 grams of protein per cup,p along with more vitamin C than an orange, substantial vitamin K, folate, and the same cruciferous glucosinolates found in Brussels sprouts. It’s also rich in sulforaphane, a compound studied extensively for anti-cancer and anti-inflammatory effects.

For maximum protein and nutrient density, steam or roast broccoli rather than boiling it — boiling leaches water-soluble nutrients into the cooking water. Roasted broccoli with garlic and lemon is one of the easiest, most versatile ways to get a protein-contributing vegetable into any meal.

10. Beet Greens — 3.7g per cup (cooked)

Most people throw away the most nutritious part of the beet. Cooked beet greens deliver 3.7 grams of protein per cup alongside extremely high levels of vitamin K, vitamin A, potassium, and iron. They’re among the most nutritionally dense leafy greens available and are almost entirely wasted because most people only buy pre-trimmed beets.

Treat beet greens exactly like Swiss chard or spinach — sauté them in olive oil and garlic with a squeeze of lemon. They wilt quickly and have a mild, slightly earthy flavor that pairs well with eggs, pasta, and grain bowls.

11. Kale — 3.5g per cup (cooked)

Cooked kale delivers 3.5 grams of protein per cup and is one of the most nutrient-dense foods on earth by calorie count. It provides exceptional amounts of vitamins K, A, and C, along with calcium, manganese, and antioxidants, ts including quercetin and kaempferol. Healthline notes that kale contains more vitamin C per serving than oranges, making it one of the strongest immune-supporting vegetables available.

Massaging raw kale with olive oil and lemon juice for two minutes breaks down the fibrous cell structure and makes it far more palatable raw in salads. Cooked, it works well in soups, stir-fries, pasta, and egg dishes.

12. Mushrooms — 3.4g per cup (cooked)

Mushrooms earn a place on this list for their protein contribution and their unique nutritional profile. Cooked mushrooms deliver 3.4 grams of protein per cup and are one of the only non-animal sources of vitamin D when grown under UV light — check the label for “UV-exposed” or “vitamin D” to confirm.

They’re also rich in ergothioneine, a powerful antioxidant amino acid that researchers are increasingly studying for its role in reducing cellular oxidative stress. Sauté mushrooms in butter or olive oil until deeply browned for maximum flavor, or add them to eggs, pasta, soups, and grain bowls.

13. Snow Peas — 2.7g per cup (raw)

Snow peas are one of the few vegetables you can eat entirely — pod and all — and they contribute 2.7 grams of protein per raw cup with only 26 calories. They’re rich in vitamin C, vitamin K, and iron, and their satisfying crunch makes them one of the most practical raw snack vegetables available.

Add snow peas to stir-fries in the final two minutes of cooking to preserve their snap, toss them raw into salads, or dip them in hummus as a high-protein snack combination that easily exceeds 10 grams of protein total.

14. Bok Choy — 2.6g per cup (cooked)

Bok choy rounds out this list with 2.6 grams of protein per cooked cup and one of the most impressive calcium profiles of any vegetable — important for women concerned about bone density, especially as estrogen levels decline with age. It’s also rich in vitamins A, C, and K, and low enough in calories (around 20 per cup cooked) that you can eat it in large quantities without any calorie concern.

Baby bok choy can be halved and roasted or braised whole. Larger bok choy works well in stir-fries, soups, and noodle dishes. It wilts quickly in a hot pan with garlic and a splash of low-sodium soy sauce — a complete side dish in under five minutes.

15. Cauliflower — 2.5g per cup (cooked)

Cauliflower’s versatility has made it one of the most popular vegetable substitutes of the last decade, and it earns its place here with 2.5 grams of protein per cooked cup alongside choline — a nutrient critical for brain health and liver function that most people don’t get enough of. The American Heart Association recommends filling half your plate with vegetables and fruits, and cauliflower’s mild flavor and adaptability make it one of the easiest vegetables to achieve that consistently.

Rice it for a low-carb grain substitute, roast it whole for a dramatic centerpiece, mash it as a potato alternative, or blend it into soups for a creamy texture without cream.

Quick Reference: Protein in Vegetables at a Glance

Source: USDA FoodData Central

How to Stack Vegetable Protein Across a Day

The smartest approach is layering. No single vegetable here is going to carry your daily protein needs on its own — but when you stack them strategically alongside other protein sources, the numbers add up faster than you’d expect. A bowl of pasta with spinach, green peas, and broccoli can add 10 to 15 grams of protein from vegetables alone before you’ve counted the pasta or any protein topping. An egg scramble with mushrooms and asparagus, with a side of edamame as a snack, pushes a breakfast well past 35 grams of protein.

The other practical advantage is that high-protein vegetables are almost universally high in fiber. That fiber slows digestion, stabilizes blood sugar, and extends fullness between meals — working alongside protein rather than just alongside it. Every item on this list gives you both at once, which is a combination most processed protein supplements can’t offer.

The Bottom Line

Vegetables will never be your primary protein source, and they don’t need to be. But choosing the right ones — edamame over iceberg lettuce, spinach over cucumber, Brussels sprouts over zucchini — means you’re extracting more protein from every meal without doing any extra work. Over the course of a day, a week, a year, those choices compound. And they come with every other nutritional benefit that vegetables offer, which no protein shake can replicate.

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