
Zucchini reaches a whole new level when quickly cooked with fragrant onions and coated in tasty Asian sauces. This Japanese-style zucchini packs amazing flavor in just minutes of cooking, making it great for rushed evenings or fancy get-togethers. The perfect mix of umami soy, sweet teriyaki, and mild spice creates a veggie dish that wins over even the pickiest eaters.
I came up with this cooking trick during a summer when our garden gave us way too many zucchinis and I got bored with our usual recipes. After trying different flavors, this Asian-inspired version quickly became what my family asks for most. My kids, who normally push green stuff around their plates, actually ask for seconds when I make zucchini this way.
Basic Components
- Zucchini: Forms the base with its subtle taste that soaks up seasonings—grab medium ones with smooth, bright skin for the best texture and flavor.
- Sweet onion: Adds wonderful aroma and natural sweetness that browns slightly while cooking—its gentle taste works perfectly with the soft zucchini.
- Teriyaki sauce: Brings sweet and savory notes that turn ordinary veggies into something special—look for brands with visible spice bits for better results.
Cooking Steps
- Getting Veggies Ready:
- Give your zucchini a good rinse then cut off the ends and throw them away. Slice across the zucchini making two-inch chunks for easier handling. Take each chunk and cut it into six wedges by cutting in half first, then slicing each half into three equal pieces.
- Smart Cooking:
- Warm your vegetable oil in a big pan until it looks shiny but isn't smoking. Toss in your cut zucchini and onions, spreading them out so they brown instead of steam. Let them cook without stirring too much, which helps them get some nice color.
- Adding Flavors:
- Pour your sauces right onto the partly cooked veggies creating a burst of steam that helps the flavors sink in. Sprinkle seasonings right away, making sure they're spread all over everything in the pan.
- Watching Doneness:
- Keep an eye on things during the last few minutes, poking zucchini with a fork to see if it's how you like it. Take the pan off heat while the veggies are still a bit firm since they'll keep cooking for a minute after you stop.
- Serving It Up:
- Move everything to a serving dish or individual plates while hot. Scatter some toasted sesame seeds on top to make it look pretty with the color contrast and add a light nutty flavor.

My next-door neighbor didn't believe zucchini could taste anything but boring until she tried this at a casual dinner at my place. After going back for more, she wanted to know how I made it, saying the sauce combo totally changed what she thought about this summer veggie.
Keeping Leftovers
Put any extra in a sealed container in the fridge and eat within three days. Warm it up in a pan on medium heat to keep the nice texture instead of using the microwave, which can make the zucchini too soft.

Frequently Asked Questions
- → Can I prep Zucchini Teriyaki ahead of time?
- Yes, but zucchini tastes best fresh. If you want to make it early, cook it slightly less so it won’t get too soft when reheating. Warm it in a skillet or microwave before serving.
- → What goes well with this dish?
- This side goes great with grilled teriyaki chicken, beef, or salmon. Pair it with rice, noodles, or other Asian-inspired dishes like egg rolls and dumplings for a complete meal.
- → Can I swap in other veggies?
- Sure! Bell peppers, mushrooms, snap peas, or broccoli would work well here. Just adjust cooking times—dense veggies like broccoli need more time, while quicker ones like mushrooms should go in last.
- → What if I don’t have teriyaki sauce?
- Mix a quick replacement with 2 tablespoons soy sauce, 1 teaspoon honey or brown sugar, and a bit of garlic powder. Oyster or hoisin sauce can work too, just use less since they’re stronger in flavor.
- → How can I tell when the zucchini is done?
- It should be tender but still hold its shape. You want it soft enough to poke with a fork but with a tiny bit of crunch left. Cook for about 6 to 7 minutes and look for a slight color change to know it’s ready.