Roasted Sweet Potatoes {Gluten-Free}

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Sweet and savory roasted sweet potatoes are the ultimate comfort food! This 5-ingredient recipe is perfect as a naturally gluten-free Thanksgiving side dish, but also easy enough to make for everyday dinners.

Roasted Sweet Potatoes cubes tossed in herbs on parchment-lined baking sheet with large spoon and small bowl of dipping sauce.

Roasted Sweet Potatoes

Sweet potatoes are such a versatile food. They can be roasted (like in this recipe), mashed, turned into a casserole, and even baked in a pie. For this roasted sweet potato recipe, you need just a handful of ingredients and less than 10 minutes of prep time.

Sweet potatoes are a filling food so one large sweet potato could be a side dish for up to four people. This recipe calls for Italian seasoning, but there are so many different variations you can try. 

See just how easy it is to make naturally gluten-free roasted sweet potatoes in the detailed recipe and step-by-step photos below.

Ingredients used to make Roasted Sweet Potatoes in bowls on marble surface.

Ingredients

  • Sweet Potato: This recipe calls for 2 pounds of sweet potato, which is roughly 1 large sweet potato. Since they can vary in size, you may need more.
  • Extra-Virgin Olive Oil: Helps the seasoning to stick to the potatoes and brown them.
  • Italian Seasoning: A blend of basil, oregano, rosemary, thyme, and marjoram.
  • Salt: Enhance all the flavors. 
  • Black Pepper: Adds a slight kick—a little pepper goes a long way!

How to Make Roasted Sweet Potatoes

  1. Preheat oven to 425°F and line a large baking sheet with parchment paper. Peel the sweet potato.
  2. Cut the sweet potato into 1-inch cubes. 
  3. Place the cubes in a large bowl and toss with olive oil. 
  4. Sprinkle in the Italian seasoning, salt, and pepper and toss to thoroughly combine.
  5. Place the sweet potatoes in an even layer on the lined baking sheet. Spread these out so they aren’t crowded together. 
  6. Bake for 30 minutes, turning sweet potatoes over after the first 15 minutes. Sweet potatoes are done once you can easily pierce them with a fork and the edges have started to brown slightly. 
Steps to make Roasted Sweet Potatoes cubes tossed in herbs.

How to Pick the Best Sweet Potatoes

  • Choose sweet potatoes that are firm with no brown spots or discoloration. Brown spots on the skin usually means they have started to rot on the inside. A soft raw sweet potato is also a sign that it is starting to go bad. 
  • A little bit of white mixed with the orange flesh inside the sweet potato is perfectly normal. That is a mixture of starch and sugar and commonly referred to as “sap.”

Tips for Making the Best Roasted Sweet Potatoes

  • Try to cut all the sweet potato cubes to the same size so they bake at the same speed.
  • Space the sweet potatoes out on the baking sheet so they have room to crisp up. If you put them too close together, they’ll steam instead of roasting up with a nice golden crust. 
  • Be sure to flip the sweet potatoes over after 15 minutes so that they are evenly browned and don’t burn on one side. 
Roasted Sweet Potatoes cubes tossed in herbs on top of parchment-lined baking sheet.

How Long Does It Take to Roast Sweet Potatoes?

It takes about 40 minutes from the time you peel the sweet potatoes to the time they come out of the oven freshly roasted.

How Long Are Roasted Sweet Potatoes Good For?

These can be stored in the refrigerator in a sealed food-safe container for 3 to 4 days. Simply reheat in the microwave for about 45 seconds. For crispier leftovers, place the sweet potatoes on a parchment-lined baking sheet and reheat in a 400°F oven for about 20 minutes. 

Skin On or Skin Off

This is a personal preference! If you prefer the taste of the potatoes with the skin on, you don’t have to peel these sweet potatoes before cutting them into cubes. 

Ingredients Substitutions

You can mix and match any of your favorite spices instead of using the Italian seasoning. Other tasty ideas include ½ garlic powder, ½ paprika, ¼ cumin, 1 tablespoon dry Ranch seasoning, or even 1 tablespoon of brown sugar for a sweet edge. 

Roasted Sweet Potatoes cubes tossed in herbs and placed in bowl.

Roasted Sweet Potatoes

These roasted sweet potatoes go with just about anything! Pair them with Crispy Chicken Thighs or Gluten-Free Meatloaf for a tasty weeknight dinner or add it to your Thanksgiving spread. You can even fry leftovers the next morning as a hash to go with eggs and bacon.

More Delicious Gluten-Free Side Dish Recipes to Try!

Mama Knows Gluten Free e-book photo collage

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Roasted Sweet Potatoes (Gluten-Free)

Servings: 4 servings
Prep: 10 minutes
Cook: 30 minutes
Total: 40 minutes

Ingredients 

  • 2 pounds sweet potato, 1 large sweet potato
  • 3 tablespoons extra-virgin olive oil
  • 1 tablespoon Italian seasoning
  • ½ teaspoon salt
  • ¼ teaspoon ground black pepper

Instructions 

  • Preheat oven to 425°F.
  • Line a large baking sheet with parchment paper and set aside.
  • Peel the sweet potato and cut it into 1-inch cubes.
  • Place the sweet potato cubes into a large bowl and toss with the olive oil. Sprinkle in the Italian seasoning, salt, and pepper, then toss to thoroughly combine.
  • Place the sweet potatoes in an even layer on the baking sheet. Spread them out so they aren’t crowded together.
  • Bake for 30 minutes, turning sweet potatoes over once after the first 15 minutes. Sweet potatoes are done once you can easily pierce them with a fork and the edges have started to brown slightly.

Notes

  • Try to cut all the sweet potato cubes to the same size so they bake at the same speed.
  • Space the sweet potatoes out on the baking sheet so they have room to crisp up. If you put them too close together, they’ll steam instead of roasting up with a nice golden crust. 
  • Be sure to flip the sweet potatoes over after 15 minutes so that they evenly browned and don’t burn on one side. 
  • To store: These can be stored in the refrigerator in a sealed in a food-safe container for 3 to 4 days.
  • To reheat:  Reheat in the microwave for about 45 seconds. For crispier leftovers, place the sweet potatoes on a parchment-lined baking sheet and reheat in a 400°F oven for about 20 minutes. 
  • Mama says, “Make sure to always check your labels!

Nutrition

Serving: 1servingCalories: 291kcalCarbohydrates: 47gProtein: 4gFat: 11gSaturated Fat: 2gPolyunsaturated Fat: 1gMonounsaturated Fat: 8gSodium: 416mgPotassium: 782mgFiber: 7gSugar: 10gVitamin A: 32198IUVitamin C: 5mgCalcium: 89mgIron: 2mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: Dinner, Side Dish
Cuisine: American
Tried this recipe?Mention @mamaknowsglutenfree or tag #mamaknowsglutenfree!

About Cheryl Johnson

My name is Cheryl Johnson and I love food—lots of it! For 10 years, I owned a recipe and party planning blog, where I developed and photographed hundreds of recipes. After selling that blog in 2019, I decided to open up a bakery in my city. My bakery specialized in big over-the-top treats (think two-pound stuffed cookies).

My recipes have been featured on local news stations, Woman's World Magazine, and more. I'm excited to continue sharing my love of food with all of you!

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