Roasted Sweet Potato Rounds with Walnut-Herb Pesto

The Sheet Pan Side That Keeps Stealing the Show from the Main Course

I originally made these as a side dish for a dinner party. I’d spent the better part of the afternoon on the main course — a whole roasted chicken with about seventeen steps and a jus that required patience I barely had. The sweet potatoes were an afterthought. I sliced them into coins, roasted them until they were crispy-edged, and threw together a quick pesto with walnuts and whatever herbs I had because I needed something green on the plate. By the end of the night, three people had asked for the sweet potato recipe. Nobody asked about the chicken.

That was the moment I realized these little rounds were special. There’s something about the combination — caramelized, crispy-edged sweet potato with that rich, herbaceous walnut pesto — that transcends the sum of its parts. The sweet potatoes bring natural sweetness and a satisfying chew. The pesto brings savory depth, a little earthiness from the walnuts, and brightness from the fresh herbs and lemon. Together, they’re the kind of food that makes you close your eyes while you chew.

Since that dinner party, I’ve made these in every possible context. As a side dish, obviously. As the main event with a fried egg on top for dinner. Piled onto toast for lunch. Served at room temperature on a board with cheese and olives when friends come over. They work everywhere because the flavors are both specific and versatile — bold enough to stand on their own, complementary enough to pair with almost anything.

Here’s how I make them, including the details about roasting temperature and timing that make the difference between soft sweet potatoes (fine) and crispy-edged, caramelized sweet potato coins (transcendent).

Roasted Sweet Potato Rounds with Walnut-Herb Pesto | Crispy Sheet Pan Side That Becomes a Meal

How to Make It

Step 1

Step 2

Step 3

Step 4

Roasted Sweet Potato Rounds with Walnut-Herb Pesto

I originally made these as a side dish for a dinner party. I'd spent the better part of the afternoon on the main course — a whole roasted chicken with about seventeen steps and a jus that required patience I barely had. The sweet potatoes were an afterthought. I sliced them into coins, roasted them

Print Recipe Pin Recipe

Prep Time 35 minutes mins

Total Time 35 minutes mins

Servings: 4 servings

Course: Main

Cuisine: Wellness

Ingredients Method

Ingredients

  

• 2 large sweet potatoes (about 1.5 pounds total), scrubbed clean
• 2 tablespoons extra-virgin olive oil
• 1/2 teaspoon fine sea salt
• 1/4 teaspoon freshly cracked black pepper
• 1/4 teaspoon smoked paprika (optional but excellent)

Method

 

1. Preheat your oven to 425 degrees Fahrenheit. This temperature matters — lower and the sweet potatoes will steam and stay soft. You need that high heat to get the edges crispy and the bottoms caramelized.
2. Arrange the sweet potato rounds in a single layer on a large parchment-lined baking sheet. This is the most important step, and it's where people usually go wrong: do not overlap them. Every round needs direct contact with the hot sheet pan. If they're piled on top of each other, they'll steam instead of roast and you'll end up with soft, floppy sweet potatoes instead of crispy ones. If you need to use two sheet pans, use two sheet pans.
3. While the sweet potatoes roast, make the pesto. Add the walnuts to a food processor and pulse a few times until they're broken into small pieces but not powder. Then add the basil, parsley, garlic, lemon juice, nutritional yeast, and salt. Pulse a few more times while drizzling in the olive oil through the feed tube. You want a texture that's somewhere between chunky and smooth — rustic, with visible herb flecks and small walnut pieces. Not a puree. The textural contrast against the smooth sweet potato is part of what makes this work.
4. Transfer the roasted sweet potato rounds to a serving platter or board. Dollop a small spoonful of pesto onto each round — about a teaspoon per coin. You can also drizzle the pesto over the whole platter more loosely if you prefer a less precious presentation. Scatter a few extra walnut pieces over the top, add a few small basil leaves if you want it to look especially beautiful, and finish with a light squeeze of lemon juice.

Why This Works

This recipe is the definition of greater than the sum of its parts. Roasted sweet potatoes on their own are good. Walnut pesto on its own is good. Together, they create something that has depth, texture, and a flavor complexity that genuinely surprises people. The natural sweetness of the caramelized sweet potato plays against the savory, herby pesto in a way that keeps you reaching for one more round. And the whole thing comes together on one sheet pan with a food processor running in the background. That’s the kind of efficiency I can get behind.

Variations to Try

• Make it a meal: Top the assembled platter with a fried egg, some crumbled goat cheese, and a handful of arugula. Dinner for one, and a very good dinner at that.
• Pistachio pesto: Swap the walnuts for raw pistachios and the parsley for mint. The resulting pesto is brighter and more vibrant — beautiful with the sweet potato in spring and summer.
• Spicy honey drizzle: Finish the platter with a light drizzle of hot honey (honey mixed with a pinch of red pepper flakes). The heat-sweet-savory combination is genuinely addictive.
• Fall version: Add a sprinkle of pomegranate seeds over the finished platter. The burst of tartness against the sweet potato and rich pesto is outstanding, and it looks like a magazine cover.

This one’s a crowd-pleaser in every context I’ve served it. Let me know in the comments what you pair it with — I’m always looking for new combinations.

Cory Jones

Cory Jones has been in the media and publishing space for over 20 years. He is a huge fan of Rancho Gordo beans and tries to workout more than he actually works out. He launched The Greenest to provide real, trusted information about all things wellness.