To prepare a zucchini miso recipe, you'll need: Zucchini. You can use any type of zucchini, but zucchini is the most common choice. Rinse the zucchini under cold water and pat dry with paper towels. Cut the slices in half lengthwise, then cut each half into 1/4-inch slices. Toss the cut slices with olive oil, salt, and pepper to taste. Add the drained zucchini to the bowl with the oil mixture. Cover and refrigerate until ready to use, at least 4 hours.