Prep Tips
Slice the zucchini planks and brush them with oil earlier in the day; keep them covered in the fridge until the grill is hot.
Directions
Heat the grill Preheat your grill to medium-high, about 400–450°F, and lightly oil the grates so the zucchini won't stick.
Cut the planks Trim the ends off 4 zucchini and slice each lengthwise into planks about 1/4 to 1/3 inch thick.
Season the zucchini Brush both sides of the planks with 2 tbsp olive oil, then season generously with kosher salt and black pepper.
Grill until charred Lay the planks on the grill and cook, undisturbed, for 3–4 minutes per side, until you see deep char marks and the zucchini is tender but not mushy. Transfer to a platter, taste, and add a little more kosher salt and black pepper if needed before serving.