BBQA long slice of grilled zucchini can fill a sandwich, sit beside a main course or become the centre of a vegetable platter. The useful decision comes before the fire: choose one thickness and a serving plan, then cook a manageable batch to the texture you want.
This guide uses zucchini, also called courgette. The technical reference is Weber's published method for lengthwise slices; selection and handling guidance comes from university extension and the FDA. The batch layout, serving choices and troubleshooting workflow are BBQ Stories editorial suggestions.
Choose zucchini for slices
University of Minnesota Extension advises harvesting summer squash before it becomes oversized, when large seeds, hard skin and fibrous or watery flesh can develop. It gives up to four days of refrigerated storage for summer squash. For this cook, choose medium-sized zucchini that you can cut into reasonably similar slices.
Set out a knife, a stable chopping board, a clean preparation tray and a separate serving platter. Have a broad spatula or suitable tongs ready before lighting the grill. A long slice needs support when you lift it; gripping only a soft tip makes the job awkward.
Wash, dry and cut evenly
Follow FDA produce guidance: begin with clean hands, rinse the whole zucchini under running water before cutting, and dry it with a clean towel. Do not use soap or detergent on produce. Keep the preparation area and serving utensils separate from raw meat, poultry and seafood.
Trim the ends and cut lengthwise into slices about 1 cm thick, roughly 3/8 inch. Weber uses this thickness in its courgette method. Keep the narrow outside pieces together on the tray so you can check them separately. There is no need to force every irregular piece into the same cooking schedule.
Use one clear heat reference
Weber's reference method uses lightly oiled, seasoned slices over direct heat at about 200°C, or 390°F, for approximately three minutes on each side. Use that as a starting point for the cut described above, not a fixed rule for whole zucchini, paper-thin ribbons or every grill.
Preheat and clean your equipment according to its manufacturer's instructions. Brush the slices with a light coating of oil and add salt and pepper. Place them across the grate bars in a single layer, with enough space to get a tool beneath each piece. Keep a gentler area available if a slice colours faster than it softens; our direct-and-indirect-heat guide explains that layout.
Our batch suggestion: work from left to right when placing the slices. Start checking in the same order. On a small grill, cook two modest batches rather than filling every gap and losing room to turn the food.
Turn with support and check the middle
Near the reference turning time, lift one edge gently to inspect the underside. If a slice resists lifting, avoid pulling hard enough to tear it. Give it a little more time, then ease a suitable spatula underneath. Turn with support along the slice rather than squeezing one end.
Check a thicker piece with a fork as cooking progresses. For a platter, aim for a tender slice that you can still lift intact. For chopping into another dish, a softer result may suit you. Taste a small piece once it is cool enough to handle and stop when the texture is right for your meal.
Do not keep cooking solely to create matching dark stripes. If a slice is browning too rapidly, move it to gentler heat. Remove pieces individually when ready instead of waiting for the whole batch to look identical.
Troubleshoot the next batch
Soft before it browned? For the next batch, compare the actual slice thickness and preheating with your reference. Reduce repeated turning and check earlier. Adding more cooking time cannot restore a slice that has already become too soft.
Brown outside, firmer than you wanted inside? Finish more gently and make the next batch more even in thickness. Record the adjustment rather than changing the cut, heat and timing all at once.
A slice broke? Transfer the pieces to the clean platter. Chopping them for a sandwich or grain bowl is a useful serving choice; an intact shape is not the only successful result.
Decide how it reaches the table
For a vegetable platter, lay the slices loosely alongside grilled mushrooms and offer lemon at the table. For sandwiches, cut the cooked slices to fit the bread and add a spread you already enjoy. For a grain bowl, chop them into fork-sized pieces and combine with the other prepared ingredients just before serving.
Keep finishing ingredients separate until you know how much you want. A little dressing can be added at the table; a heavily dressed platter is harder to adjust. Refrigerate leftovers promptly and use the linked BBQ leftovers guide for cooling, storage and reheating.
Prepared with AI assistance. BBQ Stories has not kitchen-tested this guide. Primary references and related reading are listed below.
Sources & further reading
- https://www.weber.com/GB/en/recipes/vegetarian/grilled-aubergine-and-courgette/weber-67796.html
- https://extension.umn.edu/garden-and-home/yard-and-garden/gardening-in-minnesota/growing-summer-squash-and-zucchini
- https://www.fda.gov/food/buy-store-serve-safe-food/selecting-and-serving-produce-safely
- https://bbqstories.com/guides/fire-smoke/direct-and-indirect
- https://bbqstories.com/originals/how-to-grill-portobello-mushrooms
- https://bbqstories.com/originals/bbq-leftovers-cooling-storage-reheating
Prepared with AI assistance.