How Long To Bake Brussel Sprouts At 400?


Brussels sprout is a kind of vegetable that contains many nutrients such as vitamins, minerals, and fiber,…

It is also the favorite dish of many people, especially children.

There are many ways to serve the perfect Brussels sprouts.

However, the most common and popular way to cook Brussels sprouts is by baking them.

Baking Brussels sprouts is a healthy and delicious option for those who want to enjoy this nutritious vegetable without adding any extra calories from oil or other ingredients.

In this post, we will go deep into the baking-roasting method.

In particular, we will share several tips and answer the question of how long to bake brussel sprouts at 400.

How Long To Bake Brussel Sprouts At 400?

Baking Brussels sprouts at 400 degrees Fahrenheit is a quick and efficient way to achieve a perfect balance of tenderness and crispiness.

However, how long to bake brussel sprouts at 400 depends on how you cook them and many other factors:

1. Baking With The Oven

Using an oven is the most popular method for baking Brussels sprouts, and it’s also the easiest.

Preheat your oven to 400°F (200°C) and place the seasoned Brussels sprouts on a baking sheet in a single layer.

Bake for 20-25 minutes, flipping them halfway through to ensure even cooking.

The timing may slightly vary depending on the size of the Brussels sprouts and your oven, so keep an eye on them to avoid overcooking.

2. Baking With The Air Fryer

If you have an air fryer, you can also use it to bake Brussels sprouts.

Preheat the air fryer to 400°F (200°C) and place the seasoned Brussels sprouts in a single layer in the basket.

Cook for 10-12 minutes, shaking the basket halfway through to ensure even cooking.

The result will be crispy and delicious Brussels sprouts that are evenly cooked.

The timing of cooking with the air fryer is faster than with the oven because the air fryer has a system of fans that blow the heat around.

Hence, the reality temperature may be higher than the set temperature.

3. Baking The Frozen Brussel Sprouts

If you’re in a rush and don’t have time to thaw the Brussels sprouts, you can still bake them from frozen.

Simply increase the baking time by 5-10 minutes to ensure they are fully cooked.

However, it’s recommended to defrost the Brussels sprouts first or use the fresh ones for better texture and taste as well as nutrition.

Factors Impact On How Long To Bake Brussel Sprouts At 400

Several factors can influence how long you should bake Brussels sprouts at 400 degrees Fahrenheit to achieve the desired tenderness and caramelization.

First of all, the size of Brussels sprouts can affect the baking time.

Larger Brussels sprouts may take longer to cook. If they vary in size, try to cut them uniformly to ensure even baking.

Second, it is your desired texture.

If you prefer softer, more tender Brussels sprouts, bake them a bit longer.

For a crispier exterior and a bite that still has some resistance, bake for a shorter period.

Third, not all ovens and air fryers are the same, some might run hotter or cooler than the set temperature.

It’s important to know your oven and possibly adjust cooking times accordingly.

Lastly, spacing on the baking sheet and the altitude can be the factors.

Overcrowding the pan can result in steaming rather than roasting, extending the baking time needed to get those crispy edges. 

Also, at high altitudes, the air pressure is lower, and foods take longer to bake. 

Keep these factors in mind when determining the baking time for your Brussels sprouts to ensure they come out perfectly cooked to your liking. 

How To Bake Brussel Sprouts At 400?

Step 1: Preparing The Brussel Sprouts

First and foremost, you should choose fresh Brussels sprouts for your dish.

Fresh Brussels sprouts have tightly closed leaves with a vibrant green color.

Avoid those that have yellow or wilted leaves as they are not fresh and may affect the taste of the dish.

Even if they are sold at a sale-off price, don’t fall into it.

Once you have selected the fresh brussel sprouts, it’s time to clean and trim them.

Start by removing any damaged or wilted outer leaves and rinse them under cold water to remove any debris.

Then you can use the cooking tissue to remove the water and dry the Brussels sprouts.

This can make the brussel sprouts absorb the seasonings more quickly.

Using a sharp knife, trim the stem end of each Brussels sprouts and cut them in half or any shape that you desire.

This will help the heat to penetrate evenly during baking.

If you like your Brussels sprouts softer and more mouth-watering, you can skip this step.

By doing that, you also can limit the deduction of nutrition.

Step 2: Seasoning The Brussel Sprout

There are a few basic seasoning options that go well with Brussels sprouts such as salt, pepper, garlic, and olive oil.

You can mix these ingredients in a bowl and toss the Brussels sprouts to evenly coat them before baking.

Step 3: Balsamic Vinegar

For an extra kick of flavor, you can also add balsamic vinegar to the Brussels sprouts before baking.

Just use a pastry brush or drizzle it over the seasoned Brussels sprouts and toss them gently.

Step 4: Olive Oil, Salt, and Pepper

For a more classic and simple seasoning, you can just use olive oil, salt, and pepper to bake your Brussels sprouts.

This combination gives the vegetable a nice crispy texture while still maintaining its natural flavor.

Step 5: Maple Syrup and Dijon Mustard

For those who love a combination of sweet and savory flavors, this seasoning is perfect for you.

Mix maple syrup with Dijon mustard, drizzle it over the Brussels sprouts, and toss them gently before baking.

Step 6: Garlic and Parmesan

For a more savory option, chop some garlic and mix it with grated parmesan cheese.

Toss the Brussels sprouts in this mixture before baking for a cheesy and flavorful dish.

Step 7: Bacon and Onion

For those who love a hint of smokiness, add some chopped bacon and onion to your Brussels.

This will add a layer of flavor and texture to the dish. You can also sprinkle some breadcrumbs on top for a crunchy element.

Step 8: Placing The Brussels Sprouts On The Baking Sheet

You can line the baking sheet with parchment paper or aluminum foil.

This is an optional step, but it can make cleaning up easier.

Simply line your baking sheet with parchment paper or aluminum foil before placing the Brussels sprouts on top.

If you’re not using parchment paper or aluminum foil, greasing your baking sheet with olive oil or cooking spray will prevent the Brussels sprouts from sticking to the sheet.

After preparing the baking sheet, place your seasoned Brussels sprouts in a single layer on top.

Make sure they are clean as this can prevent even cooking and crispiness.

It’s important to ensure the Brussels sprouts are evenly spaced and in a single layer on the baking sheet.

This will allow for proper air circulation and even cooking, resulting in a crispy exterior and tender interior.

Step 9: Roasting In The Preheated Oven For 20-25 Minutes

Once your Brussels sprouts are prepared and placed on the baking sheet, it’s time to roast them in the oven.

As mentioned before, preheat your oven to 400°F (200°C) and bake for 20-25 minutes.

To ensure even cooking, it’s recommended to flip the Brussels sprouts halfway through the baking process.

This will also help achieve an evenly crispy exterior.

After 20-25 minutes, check the Brussels sprouts for desired doneness.

If you’re using a different seasoning or ingredients that have a shorter cooking time, make sure to adjust the baking time accordingly. 

Step 10: Serving and Garnishing

Once the Brussels sprouts are cooked to your liking, remove them from the oven and let them cool for a few minutes before serving.

You can garnish with some fresh herbs or grated parmesan cheese if desired.

Serve as a side dish or topping for salads and enjoy!

Different Ways To Enjoy Baked Brussel Sprouts

Baked Brussels sprouts are a versatile dish that can be enjoyed in multiple ways, adding variety to your meals.

Here are some ideas to savor this delightful veggie:

1. As a Salad Topper: Cool the baked Brussels sprouts and slice them before adding them to a fresh garden salad for a delightful crunch.

2. In Grain Bowls: Mix them with quinoa, brown rice, or farro, and complement them with a protein of your choice for a wholesome meal.

3. Blended in Pasta: Combine the Brussels sprouts with pasta and a light sauce for a hearty dish that’s full of flavor and texture.

4. As a Pizza Topping: Chop the baked Brussels sprouts and use them as a nutritious pizza topping along with your other favorite ingredients.

5. In Wraps and Sandwiches: Incorporate them into wraps or sandwiches for a nutritious lunch that packs a punch.

6. Served with Dip: Serve them whole or halved with a creamy dip, such as aioli or hummus, as a tasty appetizer or snack.


Baked brussel sprouts offer a delicious and nutritious option for anyone looking to enhance their diet with a versatile and flavorful vegetable.

Whether you choose to savor them straight from the oven with a touch of seasoning, incorporate them into complex dishes, or enjoy them as a satisfying snack, these little green gems are sure to impress.

Remember to consider the different methods of preparation and cooking to achieve your desired texture and taste.

Experiment with various seasonings and toppings to find your perfect brussel sprout recipe.

Now you know many tips on how to make the perfect dish with Brussels sprouts and how long to bake brussel sprouts at 400.

Experiment with different flavors and enjoy this healthy, tasty food in various ways. Happy cooking!


Chef Chip Roman is one of the most exciting and talented chefs in Philadelphia. He has his own catering business, Charles Roman Catering, as well as Roman Restaurant Group which includes Blackfish, Mica, and Ela. He graduated from Drexel University in 2002 with a degree in business and culinary arts. Chip Roman is a classically trained chef who has worked in some of the most prestigious kitchens and chefs in Philadelphia, including Le Bec Fin’s George Perrier and Marc Vetri’s Vetri.

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