Step 1

Preheat oven to 450°. Rinse 2 sweet potatoes, rubbing to remove dirt from skins.

Step 2

Cut potatoes into quarters lengthwise, then cut each wedge in half crosswise into 2"-long pieces (think a nice size to eat with your hands).

Step 3

Toss potatoes, 2 Tbsp. oil, and ½ tsp. salt on a rimmed baking sheet. Roast, tossing every 5 minutes, until a knife easily pierces flesh but exterior is still crispy, 15–20 minutes total (really important since you are cooking them at such a high temperature!).

Step 4

Meanwhile, mix 2 Tbsp. tahini, 2 Tbsp. miso, 2 tsp. vinegar, and 1 Tbsp. water with a fork in a small bowl until smooth.

Step 5

Trim root end off 1 scallion, then thinly slice from bulb to dark green tip.

Step 6

Heat a small dry skillet over medium. Toast 1 tsp. sesame seeds, tossing constantly, until fragrant and golden, about 30 seconds.

Step 7

Spread tahini sauce on a platter. Arrange potatoes over. Top with sesame seeds and scallions.