Since squash takes almost an hour to grill, unless you are barbecuing something large, such as a turkey, it’s best to precook the squash in the microwave or conventional oven before finishing on the grill.
Squash cooking tip
If doubling recipe, don’t cook more than 4 squash halves in microwave at a time. If you don’t have a microwave, squash may also be cooked entirely on barbecue or precooked in a conventional oven. In either case, slice squash in half, remove seeds and proceed as follows: For barbecue Wrap squash halves in heavy foil. Barbecue over medium-high heat with lid down but turning often, until almost fork-tender, about 40 minutes. Remove foil. Glaze as directed. For indoor oven baking Place squash halves cut-side down on a rimmed baking sheet. Bake at 350F (180C) for 40 to 50 minutes or until almost fork-tender. Finish cooking and glazing on barbecue as directed. Or to finish in oven, turn squash over and coat as directed. Broil on centre rack until nicely glazed and fork-tender, about 6 minutes.