Meatless Monday Challenge

30-Minute Roasted Brussels Sprouts and Sweet Potatoes

on August 25, 2023
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5 from 3 votes
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This simple, easy, 30-miute recipe for Roasted Brussels Sprouts and Sweet Potatoes is the perfect balance of earthiness and sweetness.
Serving platter with roasted sweet potatoes and brussels sprouts

Looking for a delicious and nutritious side dish that’s bursting with flavor? Let’s turn Roasted Brussels Sprouts and Sweet Potatoes into an irresistible, balanced, and vibrant dynamic duo.

Get ready to discover the perfect harmony between the earthy richness of roasted Brussels sprouts and the natural sweetness of tender-in-the-center, crispy-on-the-outside sweet potatoes. This simple sheet pan vegetable recipe is easy, affordable, and nutritious.

In this recipe, you will learn how to prep brussels sprouts for roasting, how to peel and cube sweet potatoes, and how to perfectly roast sweet potatoes and brussels sprouts at the same time and on just one sheet plan.

Plus, you’ll be given flavor options to really make this dish your own!

Close up of roasted sweet potatoes and brussels sprouts

As an environmental scientist, I always try to stick to seasonal eating when I can! It’s one of the easiest (and most delicious!) ways to support local farmers and improve your carbon footprint.

Green tip: Seasonal and local foods have less associated transportation costs and fuel emissions. Check when sweet potatoes and brussels sprouts are in season in your area with this Seasonal Food Guide.

Brussels Sprouts and Sweet Potatoes Ingredients

Here’s everything you need:

  • Brussels sprouts. One stem or one package of brussels sprouts is also usually about one pound of sprouts. Fresh or frozen (thawed).
  • Sweet potatoes. One large or two small sweet potatoes usually equate to 1 pound.
  • Olive oil. To roast your vegetables in to get a crispy exterior.
  • Salt & pepper. To lightly season and bring out the natural flavors of your vegetables.
ingredients for roasted Brussels sprouts and sweet potatoes - Brussels sprouts, salt, olive oil, pepper, sweet potato

Optional Flavor-Boosting Add-in Ideas:

  • Garlic or garlic powder. For extra savory and umami flavor.
  • Shallots. Dice them up and add them to the sheet pan with the cauliflower and sweet potato.
  • Crushed red pepper. If you’re seeking a little bit of spice.
  • Grated or shaved Parmesan cheese (or Nutritional Yeast). For cheesiness and a little extra salt.
  • Butter. For extra moisture and a rich, buttery flavor.
  • Lemon juice. A little citrus really goes a long way.

Sweet Potatoes and Brussels Sprouts Tips and Tricks

How to Keep Sweet Potatoes and Brussels Sprouts Fresh

Brussels sprouts that are still on the stalk will last a little longer than those that are already separated. Still, most fresh brussels sprouts can last up to 7 days when they are stored properly.

The best way to store your brussels sprouts is dry in a sealed bag or airtight container in the “crisper” drawer in your refrigerator. It’s best not to rinse them until you’re ready to roast them, to ensure they are nice and dry when you store them.

As for sweet potatoes, they are best stored whole with the peels still on, in a cool, dry spot on the countertop. The average shelf life of a sweet potato that is not refrigerated is typically 3-5 weeks.

To make them last longer, you can store them in the refrigerator for up to 3 months, or even in the freezer for up to 6 months. However, refrigerating and freezing your potatoes may have a small effect on the texture of the sweet potato when roasted.

Green tip: Did you know that 50% of food waste happens at home? Reduce your contribution to food waste by properly storing your vegetables until ready for use.

How to Cube Sweet Potato

Our ultimate goal for these sweet potatoes is for them to be in roughly equal, bite-sized pieces so they can cook in the same amount of time as the brussels sprouts.

To achieve the best roasted sweet potatoes, start by peeling your sweet potatoes. The potato peels can be composted, or you can make a fun zero-waste recipe with them, like these Sweet Potato Skin Fries.

Once peeled, slice the sweet potato widthwise into slices that are roughly 1-inch thick. Then you can lay those slices flat and start cutting again into 1-inch-wide strips.

From there, rotate the strips on your cutting board and cut them again into small cubes, about 1 cubic inch. Not all pieces will be perfect cubes, and that’s okay. We just want them roughly the same size to keep a similar roasting time for each piece.

Peeling sweet potatoes with a vegetable peeler
Step 1: Peel your sweet potatoes.
Slicing sweet potatoes in one inch strips
Step 2: Slice potato into 1-inch-thick slices.
Laying sweet potato strips flat to slice
Step 3: Lay the slices flat and cut into 1-inch-wide strips.
Rotating sliced sweet potatoes to cut into cubes
Step 4: Rotate the strips and cut into 1-inch cubes.

How to Prep Brussels Sprouts

For the best roasted brussels sprouts, you have to trim off the rough ends. The rough end is the little tip on the side of the brussels sprout right where it was taken off the stalk.

Once the ends are cut off, slice them in half lengthwise. During this process, some of the outer layers of the brussels may flake off. I encourage you to add them to the baking sheet with the brussels sprouts.

They get super caramelized and crispy and add extra flavor and texture to this roasted vegetable side dish.

Cutting ends off brussels sprouts
Step 1: Cut the rough ends off of the brussels sprouts.
Slicing brussels sprouts lengthwise
Step 2: Slice the brussels sprouts in half lengthwise.

Add Oil and Seasoning to Your Vegetables

Add the prepped sweet potatoes and brussels sprouts to a large 18 x 26-inch baking sheet and spread them out in a single layer. For less clean up, you can opt to line your baking tray with aluminum foil.

Then, drizzle on the extra virgin olive oil and sprinkle on the salt and pepper.

Use clean hands to toss the brussels sprouts and sweet potatoes in the oil, salt, and pepper to evenly coat.

Alternatively, you can use tongs or two large forks to toss if you don’t want to get your hands dirty. Then, spread the vegetables out once again in a single layer, making sure nothing is stacked on top of one another.

Sprinkling salt on top of brussels sprouts and sweet potatoes on a baking tray

How to Perfectly Roast Sweet Potatoes and Brussels Sprouts

Roast the vegetables at 425°F for 20 minutes until the brussels sprouts starts to show some signs of turning golden brown and the sweet potatoes are nice and crispy.

Baking Tray with Freshly Roasted Sweet Potatoes and Brussels Sprouts

Serving Your Roasted Brussels Sprouts and Sweet Potatoes

The fresh flavors of this delicious side dish are complementary to pretty much any dish you serve it with! If you want to spruce the roasted veggies up a bit with a sauce or gravy, try this Shallot Cream Sauce or Hearty Mushroom Gravy over top.

As for my favorite mains to serve this with, here are my top 3:

  • Portobello Mushroom Steaks. Marinated and grilled Portobello mushrooms, seasoned to perfection, that serve as a hearty plant-based alternative to traditional steak.
  • Salmon Sliders with Dill Yogurt Sauce. Delightful mini sandwiches featuring succulent spicy salmon patties, complemented by a refreshing dill-infused yogurt sauce.
  • Crispy Blackened Cod. Flaky cod fillets coated in a flavorful blend of spices, pan-seared to achieve a crispy exterior while preserving the tender, moist interior.
Serving tray with roasted vegetables cropped

How to Properly Store Roasted Vegetables

These Roasted Sweet Potatoes and Brussels Sprouts will last in the refrigerator up to 5 days in an airtight container. They can also be frozen for up to 12 months.

To reheat, bring your oven up to 350°F and roast them again as is (no need to add any extra oil or seasonings) for about 8-10 minutes until heated thoroughly.

If you do freeze them, you can either add more time to the reheating time above or thaw them first. To thaw them, transfer them from the freezer to the refrigerator and let them rest in there overnight.

Green tip: Another great way to reduce food waste is to properly store and reheat your leftovers so you can consume them.

Brussels Sprouts and Sweet Potatoes Frequently Asked Questions

Can you cook brussels sprouts with sweet potatoes?

You can absolutely roast brussels sprouts and sweet potatoes together with a great outcome. The key is cutting the sweet potatoes into small cubes so they roast in the same amount of time as the brussels sprouts.

Once cubed, the brussels sprouts and sweet potatoes will roast beautifully in 20 minutes at 425°F.

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Why You Should Make these Roasted Brussels Sprouts and Sweet Potatoes

  • They’re healthful! Both brussels sprouts and sweet potatoes boast tons of nutritional value, packed with antioxidants, vitamins, and fiber.
  • Their natural flavors come together harmoniously. The sweetness of the potatoes plays beautifully with the earthiness of the brussels sprouts.
  • This recipe is quick and easy! Super simple with ideas for how you can make it your own, all coming together in less than 30 minutes.

If you’re loving these Roasted Brussels Sprouts and Sweet Potatoes and want more roasted vegetable medleys, check out these recipes for Roasted Potatoes and Asparagus and Roasted Broccoli and Carrots.

Serving platter with roasted sweet potatoes and brussels sprouts

30-Minute Roasted Brussels Sprouts and Sweet Potatoes

5 from 3 votes
Marley Goldin
This simple, easy, 30-miute recipe for Roasted Brussels Sprouts and Sweet Potatoes is the perfect balance of earthiness and natural sweetness with tender and crispy vegetables caramelized to perfection.
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings 4 servings


Roasted Brussels Sprouts and Sweet Potatoes

  • 1 pound brussels sprouts
  • 1 pound sweet potato
  • 2 tablespoons extra-virgin olive oil
  • ½ teaspoon salt
  • ½ teaspoon black pepper

Optional Flavor-Boosting Add-Ins

  • 2 cloves garlic (minced)
  • 2 teaspoons lemon juice
  • ½ teaspoon garlic and/or onion powder
  • 2 large shallots (diced)
  • 2 tablespoons unsalted butter (dairy or plant-based)
  • 2 tablespoons grated Parmesan cheese or Nutritional Yeast


  • Preheat your oven to 425°F.
  • Prep your vegetables by trimming the ends off the brussels sprouts and slicing them in half lengthwise and peel your sweet potatoes and cut them into bite-sized cubes, about 1 cubic inch in size
    Peeled and cubed sweet potatoes and brussels sprouts cleaned and sliced lengthwise
  • To a large 18 x 26-inch baking sheet, add your prepared brussels sprouts and sweet potatoes. Add the olive oil, salt, and pepper, and toss to coat. If you're adding any optional toppings, add them now, too. Then, spread the vegetables out in a single layer.
    Cubed sweet potatoes and sliced brussels sprouts
  • Roast for 20 minutes until brussels sprouts start to caramelize and sweet potatoes start to get crispy.
    Oven roasted cubed sweet potato and halved brussels sprouts just out of the oven

Pro Tips

  • The brussels sprouts skins and sweet potato peels can be composted.
  • For more recipes like this one, check out this list of best roasted vegetable recipes!
Course Sides
Cuisine American
Diet Vegan, Vegetarian
Keyword 30 Minutes or Less, 5 Ingredients or Less, Roasted Brussels Sprouts, Roasted Sweet Potato, Roasted Vegetables, Vegetable Side Dish
Did you make this recipe?Let me know by leaving a recipe rating below, or by tagging @marleysmenu on Instagram.


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