How to Cook Summer Squash. The "summer" squash - zucchini, crookneck, pattypan, and other smaller, delicate squash - taste best steamed or sautéed. As with most recipes you can add your own flavor to the suggested cooking instructions below.
Boil sliced summer squash in salted water for 3 to 5 minutes (depending on the size of your slices) or until tender.
Steam slices or chunks of summer squash for 2 to 4 minutes, depending on the size of the slices.
Microwave slices or chunks of summer squash with a little water for 4 to 6 minutes.
Sauté sliced summer squash over medium-high heat, with olive oil and garlic, for 5 minutes, or until browned in places and tender.
Grill thick slices of oil-brushed summer squash over medium coals for 5 minutes per side.
Try summer squash with finely chopped mixed fresh herbs (perhaps parsley, summer savory and marjoram) and lemon or butter.