
Tender zucchini becomes a standout side when quickly cooked with flavorful onions and coated in rich Asian sauces. This Japanese-style zucchini packs amazing flavor in just minutes of cooking time, making it great for rushed evenings or fancy dinner get-togethers. The tasty 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 approach during a summer when my garden gave me way too many zucchinis and I got bored with my usual recipes. After trying different flavor combinations, this Asian-inspired version quickly became what my family asked for most. My kids, who normally turn their noses up at green stuff, actually ask for seconds when I make zucchini this way.
Basic Ingredients
- Zucchini: Forms the main component with its subtle taste and sponge-like ability to soak up flavors—grab medium ones with smooth, bright skin for the best results.
- Sweet onion: Adds aromatic background and natural sweetness that browns nicely while cooking—its gentle flavor works with the soft taste of the zucchini without taking over.
- Teriyaki sauce: Brings sweet umami goodness that turns plain veggies into something special—look for brands with visible spice bits for the tastiest outcome.
Cooking Steps
- Getting Veggies Ready:
- Give your zucchini a good rinse then cut off the ends and throw them away. Slice across into two-inch chunks for easier handling. Take each chunk and cut it into six wedges by splitting it down the middle first, then cutting each half into three equal pieces.
- Smart Frying:
- Warm up your veggie oil in a big pan until it's shiny but not smoking. Toss in your cut-up zucchini and onions, spreading them out flat so they brown instead of steam. Let them cook a bit without moving them around too much so they can get some nice color.
- Adding Flavors:
- Drizzle your sauces right over the partly-cooked veggies which makes steam that helps push flavor into everything. Sprinkle in your seasonings right away, making sure they're spread all over the cooking food.
- Watching Doneness:
- Keep an eye on things during the last few minutes, poking zucchini with a fork to see when it's cooked how you like it. Take the pan off the heat while the zucchini is still a bit firm since it'll keep cooking for a minute after.
- Serving It Up:
- Put your hot dish onto a serving plate or straight onto dinner plates. Scatter some toasted sesame seeds on top to make it look pretty with the color contrast and add a bit of nutty taste.

My next-door neighbor didn't believe zucchini could taste exciting until she tried this dish at a spur-of-the-moment dinner at my place. After going back for more, she wanted to know how to make it, saying the sauce combo totally changed what she thought about this summer veggie.
Keeping Leftovers
Put any extra in a sealed container in your fridge for up to three days. When you want to eat it again, warm it up slowly in a pan on medium heat to keep it from getting too soft, instead of using the microwave which might make the zucchini mushy.

Frequently Asked Questions
- → Can I make this Teriyaki Zucchini beforehand?
- You can fix it 1-2 hours early, but zucchini tastes best right after cooking. If you need to make it ahead, cook it a bit less since it'll keep softening while it sits. Just warm it up quickly in a pan or microwave when you're ready to eat.
- → What foods go well with Teriyaki Zucchini?
- This side goes great with teriyaki chicken, salmon, or beef off the grill. It's also good with rice bowls, noodles like lo mein or ramen, or next to stuff like egg rolls or dumplings. For a full dinner, just add some rice and your favorite protein.
- → Can I throw in different veggies?
- Sure thing! The sauce works on lots of vegetables. Try mixing in bell peppers, mushrooms, broccoli, or snap peas. Just remember that tougher veggies like broccoli need more time, so put those in first, and save quick-cooking ones like mushrooms for later.
- → What can I use if I don't have teriyaki sauce?
- No teriyaki? No problem! Mix 2 tablespoons soy sauce with 1 teaspoon honey or brown sugar and a bit of garlic powder. You can also use oyster sauce or hoisin sauce if you have them, but they're stronger so use less.
- → How can I tell when the zucchini is done just right?
- Perfect zucchini should be easy to poke with a fork but still keep its shape. It shouldn't be mushy and should have a little bite to it. The color changes from bright to slightly see-through green. For this dish, cooking for about 6-7 minutes usually gets it just right.