Name: Maple Walnut Roasted Sweet Potatoes
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Ingredients: 2 pounds sweet potatoes, peeled and cut into 1-inch cubes; 1 cup walnut halves or large pieces; 2 1/2 to 3 tablespoons pure maple syrup; 2 tablespoons olive oil or avocado oil; 1 1/2 teaspoons kosher salt; 1/2 teaspoon black pepper; 1 teaspoon ground cinnamon; 1/4 teaspoon ground nutmeg; 1/4 teaspoon smoked paprika or regular paprika; 1 to 2 teaspoons fresh thyme leaves, plus extra for garnish; extra maple syrup, for drizzling (optional); flaky sea salt, for topping (optional); fresh lemon or orange juice, a small squeeze for brightness (optional)

Maple Walnut Roasted Sweet Potatoes Recipe hits that perfect sweet-salty, caramelized, slightly crunchy spot that tastes like fall on a sheet pan. It works for busy weeknights or holiday dinners and takes about 45 minutes start to finish. I tested this version so many times that my family started asking if we now live in a sweet potato test kitchen.

Why Choose This Maple Walnut Roasted Sweet Potatoes Recipe

This maple walnut roasted sweet potatoes recipe gives you crispy edges, soft centers, and sticky maple bits that cling to the nuts. The walnuts toast in the oven and pick up the maple and spice, so every bite tastes like dessert that snuck into the side dish category.

You toss everything in one bowl, spread it on a sheet pan, and let the oven do the work. Clean-up stays easy, and the recipe scales up beautifully for holidays or potlucks.

“These maple walnut roasted sweet potatoes disappeared before the turkey hit the table, so I made a second batch the next day. ★★★★★”

Ingredients You’ll Need

Sweet potatoes & add-ins

2 pounds sweet potatoes, peeled and cut into 1-inch cubes
- Choose firm, heavy potatoes with smooth skin. Avoid any with large soft spots.
1 cup walnut halves or large pieces
- Use raw walnuts, not pre-roasted or salted, so they do not burn or taste too salty.
2 ½ to 3 tablespoons pure maple syrup
- Grade A dark or “amber” maple syrup gives the best flavor. Skip pancake syrup since it tastes mostly like sugar.
2 tablespoons olive oil or avocado oil
- Use a neutral or mild oil so the maple and walnuts stand out.
1 ½ teaspoons kosher salt
- If you use table salt, start with ¾ teaspoon and adjust to taste.
½ teaspoon black pepper
1 teaspoon ground cinnamon
¼ teaspoon ground nutmeg
¼ teaspoon smoked paprika or regular paprika
- Smoked paprika adds a subtle campfire vibe that plays well with the maple.
1 to 2 teaspoons fresh thyme leaves, plus extra for garnish
- Dried thyme works too; use ½ teaspoon and crush it between your fingers.

Optional finishing touches

Extra drizzle of maple syrup, to taste
Flaky sea salt for topping
A small squeeze of fresh lemon or orange juice for brightness

Pantry shortcuts & substitutions

Use pre-cut sweet potato cubes from the produce section when you feel short on time. Pat them dry so they roast instead of steam.
Swap walnuts with pecans if you prefer a softer, buttery crunch.
Replace thyme with chopped fresh rosemary for a woodsy flavor.
Use pumpkin pie spice instead of cinnamon and nutmeg if you want a shortcut.

Equipment list

Large rimmed sheet pan
Large mixing bowl
Sharp chef’s knife and sturdy cutting board
Measuring spoons and measuring cup
Spatula or large spoon for tossing
Parchment paper or a silicone baking mat (helps with cleanup and prevents sticking)

Tips & Tricks

Cut the sweet potatoes into evenly sized 1-inch cubes so they roast at the same rate.
Dry the sweet potato cubes with a clean towel if they look damp, so they caramelize instead of steam.
Use a large sheet pan and spread everything in a single layer with space between pieces. Crowded pans lead to soft, pale potatoes.
Toss the sweet potatoes with oil first, then add maple syrup and spices so the coating sticks better.
Add the walnuts halfway through roasting if your oven runs hot, so they toast without burning.
Roast on the middle rack for even browning, and stir once or twice to expose new edges to the heat.
Taste a piece near the end of cooking and adjust with a pinch of salt or a drizzle of maple syrup while still hot.
Line the pan with parchment if you want easier cleanup and less stuck-on maple.

How to Make Maple Walnut Roasted Sweet Potatoes Recipe

Step 1: Prep the oven and pan

Preheat your oven to 400°F (200°C). Line a large rimmed sheet pan with parchment paper or a silicone baking mat. This step keeps the maple from welding itself to your pan and makes cleanup much happier.

Step 2: Prep and season the sweet potatoes

Peel the sweet potatoes and cut them into 1-inch cubes. Place the cubes in a large mixing bowl and pat them dry with a clean towel if they look wet. Drizzle the oil over the sweet potatoes and toss until every piece looks lightly coated.

Sprinkle in the salt, pepper, cinnamon, nutmeg, and paprika. Toss again until the spices coat the potatoes evenly. Add the maple syrup and thyme leaves, then toss gently so you keep the coating on the potatoes instead of on the bowl.

Step 3: Arrange on the sheet pan

Spread the seasoned sweet potatoes on the prepared sheet pan in a single layer. Give them space so the hot air can circulate and crisp the edges. If you double the recipe, use two pans instead of stacking everything on one.

Step 4: Start roasting

Place the pan on the middle rack and roast for 15 minutes. During this time the sweet potatoes start to soften and the maple begins to caramelize. Your kitchen will smell like a cozy brunch spot.

Step 5: Add the walnuts

Pull the pan out after 15 minutes and scatter the walnuts over the sweet potatoes. Toss gently with a spatula to coat the walnuts in the maple and spices. Spread everything back into a single layer.

Step 6: Roast until caramelized

Return the pan to the oven and roast for another 15 to 20 minutes. Stir once more halfway through to expose new edges to the heat. The sweet potatoes finish when they feel tender in the center and show deep golden, caramelized edges, and the walnuts look toasted and fragrant.

Step 7: Taste and finish

Take the pan out and taste one cube carefully so you do not burn your tongue. Add a pinch more salt if needed, and a tiny drizzle of maple syrup if you want extra sweetness. Sprinkle with a few fresh thyme leaves and a pinch of flaky sea salt, then serve hot.

What to Serve with it?

Serve this maple walnut roasted sweet potatoes recipe with roasted chicken, turkey, or grilled salmon for a cozy, balanced meal. It pairs nicely with simple steamed green beans, sautéed spinach, or a crisp green salad with citrus dressing. You can also plate it next to scrambled eggs or an omelet for a hearty breakfast or brunch. If you host a holiday meal, slide this dish right between the stuffing and the green beans and watch it disappear.

Storage Options

Store leftovers in an airtight container in the fridge for up to 4 days.
Reheat in a 375°F oven on a sheet pan for 8 to 10 minutes until hot and slightly crisp again.
Use the microwave for quick lunches, heating in 30-second bursts and stirring between each.
Freeze in a single layer on a sheet pan, then move to a freezer bag or container and keep up to 2 months, and reheat from frozen in a 375°F oven until hot.