Brussels Sprouts Protein Amount | Raw Vs Cooked Numbers

One cup of cooked Brussels sprouts has about 4 grams of protein, while one cup raw has about 3 grams.

Brussels sprouts aren’t a “protein food” in the way beans or chicken are, yet they still add up—especially when you eat them often. The trick is knowing what serving you mean. A handful, a cup, and a side dish on a plate can all look different, and protein changes with weight and water.

This article nails down the numbers for common portions, shows how to scale them to your plate, and shares easy ways to turn sprouts into a higher-protein meal without turning dinner into math class.

Why The Protein Number Changes

Protein in vegetables is listed in a few ways: grams per 100 grams of food, plus household measures like “1 cup” or “1 sprout.” Those views can seem to clash. They’re just tied to different weights.

When Brussels sprouts cook, they soften and hold more water. A cup of cooked sprouts weighs more than a cup of raw, so a “cup” isn’t a fixed amount of food. That’s why per-cup protein can rise, fall, or stay similar depending on the cooking method and how tightly the sprouts pack.

If you want the cleanest comparison across foods, stick with grams. If you want the easiest meal planning, stick with cups and pieces. You can use both without getting tangled.

Raw Versus Cooked: What The Protein Numbers Mean

Cooking doesn’t create protein. The plant already has it. What changes is water and final weight. Boiling and draining increases water inside the sprouts, so protein per 100 g drops compared with raw. At the same time, a typical cooked portion weighs more, so the per-cup number still lands in a useful range.

Dry heat like roasting or air-frying pushes water out. The sprouts get lighter per cup, so protein per cup can look higher even when the food hasn’t gained any protein. If you track closely, weigh roasted sprouts after cooking, not before.

Pick The Measurement That Matches Your Goal

• Comparing foods: use “per 100 g.”
• Building plates: use “per cup” or “per sprout.”
• Meal prep batches: weigh the finished batch, then split it into portions.

How Cooking Method Shifts What A Cup Looks Like

A cup measure is a volume tool. Brussels sprouts change shape and pack more tightly once cooked, so a cup can swing in weight. That swing is the real reason people get mixed results when they search for “protein in Brussels sprouts.”

Boiled And Drained

This is a solid baseline because it’s consistent and widely listed in nutrition databases. If you steam sprouts until tender, you’ll usually land close to the same range.

Roasted, Air-Fried, Or Pan-Seared

Dry heat concentrates flavor and reduces water. A cup of roasted sprouts often weighs less than a cup boiled. If you use boiled numbers as a stand-in, you’ll undercount protein per cup a bit, since your roasted cup is lighter. A kitchen scale fixes that in seconds.

Shredded Raw In Slaw

Shredding doesn’t change protein, yet it changes packing. A cup of shredded sprouts can weigh more than a cup of whole raw sprouts. If you love sprout salads, weighing once or twice helps you log them the same way each time.

One more thing that trips people up is “what a serving looks like” at the table. A restaurant side can be 1 1/2 cups. A home side can be 1/2 cup. If you track protein, decide on a default portion for yourself—say, 1 cup cooked—then adjust up or down when your plate is clearly bigger or smaller.

If you want a no-fuss way to tighten your estimate, weigh one typical portion once. Put your usual cooked serving in a bowl, note the grams, then reuse that number later. You don’t need to weigh every time. You’re just teaching your eye what your own “cup” tends to be.

When you’re logging, match the entry to the food you ate: raw, boiled, or roasted. Then keep the unit consistent. Cups with cups, grams with grams. That alone prevents most mismatches.

Brussels Sprouts Protein Amount By Serving Size

The values below match the standard entries used for raw Brussels sprouts and boiled, drained Brussels sprouts in USDA FoodData Central. They’re shown as portions you can picture, weights you can repeat, and protein you can add up.

Use this as a practical cheat sheet. If your portion is between two rows, scale by weight. Multiply the “per 100 g” number by your weight, then divide by 100.

Portion	Weight	Protein
Raw sprouts, 1 sprout	19 g	0.65 g
Raw sprouts, 1 cup	88 g	3.0 g
Raw sprouts, 100 g	100 g	3.4 g
Cooked sprouts (boiled, drained), 1 sprout	21 g	0.54 g
Cooked sprouts (boiled, drained), 1/2 cup	78 g	2.0 g
Cooked sprouts (boiled, drained), 1 cup	156 g	4.0 g
Cooked sprouts (boiled, drained), 100 g	100 g	2.6 g
Cooked sprouts (boiled, drained), side dish plate (about 1 1/2 cups)	234 g	6.0 g

Here’s a fast scale check. If you eat 200 g of cooked sprouts, you’re near 2.6 × 2 = 5.2 g of protein. If you eat 150 g raw, you’re near 3.4 × 1.5 = 5.1 g of protein. The math is plain, and you only do it when you want tighter tracking.

How To Estimate Without A Scale

Use cups as your anchor. A cooked cup lands around 4 g protein. A raw cup lands around 3 g. If you eat raw sprouts in a salad and cooked sprouts as a side, log them as two separate entries, since their cup weights differ.

For “per sprout,” call it about half a gram for cooked sprouts and about two-thirds of a gram for raw sprouts. That’s close enough for most meal planning.

Serving Sizes, Labels, And Why Packages Look Different

Fresh produce rarely comes with a Nutrition Facts panel, yet frozen sprouts and prepared sprout dishes often do. That’s where serving size rules matter. In the U.S., serving sizes on labels follow federal definitions, which you can read in 21 CFR 101.9.

When you compare items, check two things: the serving size and whether the sprouts are listed as raw, cooked, or part of a mixed dish. A bag of frozen sprouts might list a cooked serving, even if you weigh them frozen.

If you like to think in “cup equivalents,” the federal food pattern tables spell out what counts as a cup of vegetables. Appendix tables from the Office of Disease Prevention and Health Promotion list those equivalents on USDA Healthy US-Style Food Patterns tables.

If you ever want to verify a nutrient straight from the source, the USDA FoodData Central API guide explains how the database is accessed and what fields it returns.

How To Build A Higher-Protein Brussels Sprouts Plate

Brussels sprouts work best as the base, then you stack protein on top. You get crunch, fiber, and a bold flavor that pairs well with both animal and plant proteins.

Pairings That Keep The Meal Simple

• Eggs: roast sprouts, then top with two eggs.
• Greek yogurt sauce: stir lemon, garlic, and salt into yogurt and spoon it over hot sprouts.
• Chicken: shred leftover chicken into a warm sprout bowl.
• Beans or lentils: toss cooked sprouts with a half cup of legumes and olive oil.
• Tofu: crisp cubes in a skillet, then add sprouts at the end.

A Simple Protein Add-On Rule

Start with 1 to 2 cups of cooked sprouts. Call that 4 to 8 grams of protein. Then add one clear protein anchor: a palm of meat or tofu, a scoop of beans, or a couple eggs. That step turns sprouts from “side vegetable” into “meal.”

Common Counting Mistakes That Skew Your Total

Most tracking errors with Brussels sprouts come from mixing units or mixing cooked and raw entries. These fixes take seconds.

Mixing Raw Weight With Cooked Portions

If you weigh sprouts raw, then roast them, the cooked portion will weigh less. Logging the raw weight will overstate what you ate and overcount protein. If you care about accuracy, weigh the finished food you put on the plate.

Using A Cup Measure For Halved Sprouts

Halving changes packing. A cup of halved sprouts can weigh more than a cup of whole sprouts. If you always halve them, stick to the same prep so your cup stays steady from meal to meal.

Forgetting The Toppings

Many sprout dishes get a shower of Parmesan, nuts, or seeds. Those can add more protein than the sprouts themselves. Count them if you’re tracking, since they change the final total in a big way.

Table Of Fast Protein Boosts For Meals

If you want sprouts on the plate and you want the meal to land in a higher-protein range, these add-ons do the heavy lifting. Pick one or mix two.

Add-On	Easy Portion	What It Does
Cooked lentils	1/2 cup	Turns sprouts into a bowl meal with a thicker bite.
Chicken breast	3–4 oz	Adds a clear protein anchor without changing flavor much.
Firm tofu	1/2 block	Soaks up sauce and keeps the meal plant-forward.
Eggs	2 large	Makes a fast breakfast-for-dinner plate.
Greek yogurt	1/2 cup	Acts like a sauce and adds creaminess without heavy fat.
Pumpkin seeds	2 tablespoons	Adds crunch and bumps protein in a snacky way.

Practical Tips That Make The Numbers Easier To Hit

Protein goals are easier when the food you plan to eat shows up on your plate. These habits keep Brussels sprouts in rotation.

Buy For The Week, Prep Once

Trim the stem ends, peel off any loose outer leaves, and rinse. Dry well. Store in a container with a paper towel to catch moisture. When you’re ready to cook, they’re already set.

Cook A Big Batch, Then Remix

Roast a sheet pan, then split it three ways: one portion as a side, one portion tossed into a grain bowl, one portion mixed into eggs. This keeps the “same vegetable” from feeling repetitive.

Use Sauces To Keep Sprouts Fresh

Brussels sprouts love acidic, salty sauces. Try mustard vinaigrette, yogurt-lemon, or a light soy-ginger glaze. Sauces also help protein pairings taste like one dish instead of two separate items on the same plate.

Reference Points You Can Memorize

• 1 cup cooked Brussels sprouts: about 4 g protein.
• 1 cup raw Brussels sprouts: about 3 g protein.
• 100 g raw Brussels sprouts: about 3.4 g protein.

Once those are in your head, the rest is just portion size. Eat sprouts often, pair them with a steady protein anchor, and you’ll get plates that feel hearty without crowding out vegetables.