
Fresh zucchini transforms into an extraordinary side dish when quickly sautéed with aromatic onions and bathed in savory Asian-inspired sauces. This Japanese zucchini delivers remarkable depth of flavor in minimal cooking time, making it perfect for busy weeknights or impressive dinner parties. The beautiful balance of umami soy, sweet teriyaki, and gentle heat creates a vegetable dish that even reluctant vegetable eaters enthusiastically devour.
I discovered this cooking method during a particularly abundant zucchini harvest when traditional preparations had become monotonous. After experimenting with various flavor profiles, this Asian-inspired version quickly became our family favorite. My children, typically suspicious of anything green, willingly eat second helpings when zucchini appears in this delicious form.
Simple Ingredients
- Zucchini: Provides the foundation with its mild flavor and ability to absorb seasonings—choose medium-sized specimens with firm, unblemished skin for optimal texture and taste.
- Sweet onion: Contributes aromatic depth and natural sugars that caramelize slightly during cooking—its milder flavor complements rather than overwhelms the delicate zucchini.
- Teriyaki sauce: Delivers complex sweetness and umami notes that transform ordinary vegetables into something extraordinary—quality brands with visible spices offer superior results.
Preparation Method
- Vegetable Preparation:
- Wash your zucchini thoroughly before cutting off and discarding stem ends. Slice each zucchini crosswise into approximately two-inch segments creating manageable pieces. Cut each cylindrical segment into six wedges by first halving, then cutting each half into three equal parts.
- Skilled Sautéing:
- Heat your vegetable oil in a large skillet until it shimmers but doesn't smoke. Add prepared zucchini and onions together, spreading them into a relatively even layer to promote proper browning rather than steaming. Allow brief cooking without excessive stirring, which permits slight caramelization.
- Sauce Integration:
- Pour your measured sauces directly over the partially cooked vegetables creating immediate steam that helps infuse flavors throughout. Add seasonings promptly, distributing them evenly across the cooking surface.
- Texture Monitoring:
- Watch carefully during final cooking minutes, testing zucchini pieces with a fork to determine when they reach your preferred texture. Remove from heat while slightly firmer than desired as residual heat continues cooking briefly after removal.
- Final Presentation:
- Transfer your completed dish to a serving platter or individual plates while still hot. Sprinkle with toasted sesame seeds creating visual appeal through color contrast while adding subtle nutty flavor.

My neighbor initially questioned whether zucchini could possibly taste exciting until she sampled this dish during an impromptu dinner gathering. After her second helping, she requested the recipe, admitting the sauce combination completely transformed her perception of this summer vegetable.
Storage Suggestions
Store any leftovers in an airtight container in the refrigerator for up to three days. Reheat gently in a skillet over medium heat to preserve texture and flavor rather than microwaving, which may soften the zucchini excessively.

Frequently Asked Questions
- → Can I make this Teriyaki Zucchini ahead of time?
- You can prepare this dish 1-2 hours ahead, but zucchini is best enjoyed freshly cooked. If making ahead, slightly undercook the zucchini since it will continue to soften as it sits. Reheat gently in a skillet or microwave just before serving.
- → What can I serve with Teriyaki Zucchini?
- This side dish pairs perfectly with grilled teriyaki chicken, salmon, or beef. It also complements rice bowls, noodle dishes like lo mein or ramen, or can be served alongside other Asian-inspired dishes such as egg rolls or dumplings. For a complete meal, serve it with steamed rice and your protein of choice.
- → Can I use other vegetables in this recipe?
- Absolutely! This teriyaki sauce works well with many vegetables. Try adding bell peppers, mushrooms, broccoli, or snap peas. Just adjust cooking times accordingly - harder vegetables like broccoli should be added first, while quicker-cooking ones like mushrooms can go in later.
- → Is there a good substitute for teriyaki sauce?
- If you don't have teriyaki sauce, you can make a quick substitute by mixing 2 tablespoons soy sauce with 1 teaspoon honey or brown sugar and a pinch of garlic powder. Alternatively, oyster sauce or hoisin sauce (though sweeter) can work in a pinch, just use a bit less as they're more concentrated.
- → How do I know when the zucchini is perfectly cooked?
- Perfectly cooked zucchini should be tender enough to pierce easily with a fork but still maintain its shape. It should have a slight bite to it rather than being mushy. The color will change from bright to a slightly more translucent green. For this recipe, 6-7 minutes total cooking time usually achieves the ideal texture.