6 bunches broccolini (about 3 lb. total), trimmed, halved lengthwise
Kosher salt
¼ cup tahini
2 Tbsp. white miso
1 Tbsp. low-sodium soy sauce
1 Tbsp. mirin (sweet Japanese rice wine)
1 Tbsp. unseasoned rice vinegar
1 tsp. toasted sesame oil
4 Tbsp. vegetable or other neutral oil, divided
2 tsp. honey, divided
½ lemon, seeds removed
Toasted sesame seeds (for serving)

PREPARATION
Cook broccolini in a large pot of boiling salted water until bright green and crisp-tender, 5–7 minutes. Drain and transfer to paper towels.

Meanwhile, mix tahini, miso, soy sauce, mirin, vinegar, sesame oil, 2 Tbsp. vegetable oil, 1 tsp. honey, and 2 Tbsp. water in a small bowl to combine; season sesame sauce with salt.

Cut lemon lengthwise into quarters, then thinly slice crosswise. Toss in a small bowl with remaining 2 Tbsp. vegetable oil and remaining 1 tsp. honey; season lightly with salt.

Spread sesame sauce on a platter and arrange broccolini on top. Scatter lemon over; sprinkle with sesame seeds.