Pressure Cooker Zucchini with Five Spice Dressing

Pressure Cooker · Side Dish · Serves 4

Zucchini cooked under pressure does something that no roasting pan or skillet achieves: it collapses into itself while staying whole. The exterior softens to a yielding, almost silken texture, and the interior — dense with moisture it had no way to release — becomes something between a cooked vegetable and a gentle custard. Lift a spear from the pot and it bends. It does not break. There is a difference, and it matters to how the five spice dressing behaves when it hits the surface — pooling in the grooves, seeping into the cut edges, coating rather than sitting on top.

Pressure Cooker Zucchini with Five Spice Dressing is a side dish, but not a modest one. The dressing — built from sesame oil, soy sauce, rice vinegar, ginger, and the full aromatic complexity of Chinese five-spice — turns a vegetable that is often an afterthought into the thing guests ask about. The pressure cooker gets it there in under three minutes of actual cook time, which is the other reason to make it: it is faster than the oven by a significant margin and produces a result the oven cannot replicate.

The Case for Doing This Properly

Zucchini has a reputation for being watery and underperforming — a vegetable that needs to be roasted at high heat to cook off its moisture before anything interesting happens. The pressure cooker inverts that logic entirely. Here, the moisture stays in. The steam trapped inside the sealed pot drives the internal temperature of the zucchini above what open-air cooking achieves, and the cell walls soften faster and more uniformly than they would under dry heat. The result is a vegetable that reads as luxurious rather than limp, which is a distinction that depends entirely on intention.

The five-spice dressing does something specific to zucchini that it would not do to a denser vegetable: it penetrates. The soft, porous surface that pressure cooking creates absorbs the dressing within minutes of application, so the flavor is not just on the surface when the dish arrives at the table — it is throughout. Making this with roasted or grilled zucchini produces a fine dish. Making it this way produces a different one.

It is also genuinely fast. From cold start to plated dish, Pressure Cooker Zucchini with Five Spice Dressing takes under 20 minutes — which is the kind of margin that makes it viable on a weeknight alongside something that demands more attention.

What You’ll Need

• 4 medium zucchini (about 2 lbs / 900g total) — medium zucchini, roughly 7–8 inches long, cook more evenly than large ones, which have developed a more fibrous core and higher water content. Very small zucchini overcook in the time the larger pieces need. Consistency in size across the batch matters
• 1/2 cup water — the minimum liquid needed to bring most electric pressure cookers to pressure; do not increase this or the zucchini will be waterlogged
• Five spice dressing:
• 2 tbsp toasted sesame oil — do not substitute with regular sesame oil; the toasted variety carries the nutty, slightly smoky character that ties the dressing together
• 1.5 tbsp low-sodium soy sauce
• 1 tbsp rice vinegar — provides brightness and acidity; plain white vinegar substitutes but has a sharper, less layered edge
• 1 tsp Chinese five-spice powder — taste your blend before committing; some commercial five-spice powders are heavy on clove, which can dominate. Reduce to 3/4 tsp if yours smells medicinal or clove-forward
• 1 tsp honey — rounds the edge of the vinegar and gives the dressing enough body to cling to the zucchini surface; maple syrup substitutes with a slightly different sweetness
• 1 tsp fresh ginger, finely grated
• 1 small garlic clove, finely grated
• 1/2 tsp chili flakes — optional; adds background warmth that pulls against the anise note of five-spice
• To finish:
• 2 scallions, thinly sliced
• 1 tsp sesame seeds, toasted
• Flaky sea salt

Making It

1. Trim the ends from each zucchini and cut them lengthwise into halves, then each half into two or three spears depending on their thickness — you are aiming for pieces roughly 3/4 inch across at their widest point. Uniform thickness is what matters, not uniform length. A thin spear next to a thick one will overcook or undercook respectively, and pressure cooking does not forgive uneven cuts the way a slower method might.
2. Pour the water into the pressure cooker pot. Set the steamer basket or trivet inside. Arrange the zucchini spears in the basket in a loose, overlapping pile — they do not need to lie flat, and they will not fit perfectly. What they need is to be above the water line, not submerged in it. The cooking here is steam, not boiling.
3. Seal the lid. Set the pressure cooker to high pressure and cook for 2 minutes. This is the number. Not 3, not 4. Two minutes at high pressure takes zucchini from raw and firm to yielding and silken without crossing into collapse. When the cook time ends, perform an immediate quick release — open the pressure valve and let the steam escape in full before opening the lid. Leaving the zucchini under residual pressure for even a minute longer will overcook them. On Instant Pot timing: The 2-minute figure accounts for the time the pot spends coming to pressure, during which the zucchini begins to cook. If your cooker comes to pressure unusually fast, check the zucchini at 1 minute 30 seconds by releasing pressure early and testing with a knife tip — it should slide in with very slight resistance.
4. While the pressure cooker works, make the dressing. Whisk together the sesame oil, soy sauce, rice vinegar, five-spice powder, honey, grated ginger, garlic, and chili flakes in a small bowl. The dressing should be cohesive but not thick — it should pour easily and coat the back of a spoon in a thin film. Taste it. The five-spice should be present but not dominating; the vinegar should be sharp enough to cut through the sesame oil’s richness.
5. When the pressure releases, open the lid and transfer the zucchini spears immediately to a wide, shallow serving dish or platter. Do not let them sit in the pot — the residual steam and heat will continue cooking them. Arrange them cut-side up where possible so the dressing can reach the exposed interior.
6. Pour the five-spice dressing over the zucchini while it is still hot. The heat opens the surface of the vegetable and the dressing absorbs inward rather than running off. Let it sit for 2 minutes before adding the garnishes — this brief rest is when most of the flavor absorption happens. Scatter the scallions and sesame seeds over the top. Finish with a small pinch of flaky salt.

The Two Minutes That Decide Everything

The cook time of 2 minutes at high pressure is not approximate. It is the exact window for medium zucchini of the dimensions described. Understanding why helps you adjust if your zucchini runs larger or smaller than the recipe assumes: the pressure cooker does not cook gently. High-pressure steam reaches approximately 250°F (121°C), which is significantly above the boiling point of water. At that temperature, zucchini’s cell walls break down rapidly. The difference between 2 minutes and 3 minutes at high pressure is the difference between a spear that holds its shape when lifted and one that falls apart on the plate.

The quick release is equally non-negotiable. Natural pressure release — the method that produces more tender results in tougher proteins — continues the cooking process as the pressure drops slowly. For a vegetable this delicate, those extra minutes of decreasing-but-still-elevated steam will push it past the window. Open the valve immediately when the timer ends and get the lid off within 60 seconds of full release.

Applying the dressing to hot zucchini, not cooled, is the step most people skip in the interest of timing. The absorption that happens in those first two minutes of contact with warm flesh is substantial — the difference between a dressed vegetable and one that has taken on the dressing’s character. Room-temperature or cold zucchini will still taste of the dressing on the surface. The hot version tastes of it throughout.

What to Watch For

The zucchini is mushy and falls apart when you try to plate it. The cook time ran long, or the quick release was not immediate. There is no recovery for overcooked zucchini — the cell structure is gone. The dish can still be served and will still taste of the dressing, but the texture is not what it should be. Set a timer and open the valve the moment it ends.

The dressing tastes overwhelmingly of one spice. Five-spice powder varies widely between brands. A clove-heavy blend can make the dressing taste closer to a mulled spice mix than a savory sauce. Taste the powder on its own before making the dressing — if clove dominates, reduce the quantity to 3/4 teaspoon and compensate with a small extra pinch of ground ginger, which counterbalances clove without disrupting the blend’s other notes.

The dressing does not absorb and sits on top of the zucchini. The zucchini was allowed to cool before the dressing was added. Once the surface temperature drops below roughly 140°F (60°C), the vegetable’s pores effectively close and absorption slows dramatically. Work quickly: platter the zucchini, dress it within 60 seconds, and do not refrigerate before serving.

The dish tastes flat despite the bold dressing. No flaky salt was added at the end, or the dressing was under-seasoned at the mixing stage. The soy sauce provides savory depth but not the kind of bright, percussive salt that finishes a dish. Flaky salt scattered just before serving provides that final note. It is not decorative.

Ways to Make It Your Own

The most productive variation is changing the vegetable entirely while keeping the dressing and method intact. Halved baby bok choy, cut-side up in the steamer basket, cooks in 1 minute at high pressure with immediate release and receives the five-spice dressing in exactly the same way. The slightly bitter, mineral character of bok choy creates a sharper contrast with the dressing’s sweetness than zucchini does. Green beans — left whole and steamed for 2 minutes — produce a snappier result with more textural resistance. Both are worth exploring.

The dressing itself has room to move. Replace the five-spice powder with a teaspoon of white miso whisked in alongside the sesame oil, and the dressing becomes earthier, less spiced, and considerably more umami-forward. It suits the zucchini equally well and sits closer to a Japanese flavor profile. Or introduce a tablespoon of tahini to the base dressing and reduce the sesame oil slightly — the result is thicker and nutty in a way that clings to the zucchini more assertively, which works well when the dish is served alongside something dry like grilled flatbread.

For a more substantial preparation, top the plated zucchini with a soft-boiled egg halved over the top, yolk broken, just before serving. The yolk runs into the dressing and creates a richer, more cohesive sauce. The dish moves from side to light main.

Putting It on the Table

Pressure Cooker Zucchini with Five Spice Dressing is a side dish with enough assertiveness to anchor a simple meal. Serve it alongside plain steamed jasmine rice and grilled or pan-seared salmon — the five-spice dressing bridges the two and the rice catches whatever pools on the plate. It also works well as part of a spread of small dishes: alongside a cold cucumber salad, some pickled vegetables, and a protein cooked simply enough not to compete with the dressing’s complexity.

For a weeknight dinner, pair it with something that requires no active attention while the pressure cooker runs — baked tofu, poached chicken, or a simple fried egg. The entire meal comes together in the time it takes to make the dressing and wait for pressure to build.

The dish serves four as a side and two as a more generous plate alongside something light. It is best eaten warm, within 30 minutes of making it, before the zucchini’s texture begins to soften further from its own residual heat.

Keeping and Reheating

Pressure Cooker Zucchini with Five Spice Dressing stores poorly compared to most cooked vegetable dishes, and the reason is worth understanding: the same softness that makes it so good to eat fresh is what accelerates its deterioration. The cell walls that pressure cooking breaks down continue to release moisture in the refrigerator, and the zucchini becomes progressively wetter and softer over 24 hours. By day two it is salvageable as an ingredient in something else — chopped into a grain bowl, stirred into a noodle dish — but not worth serving as a plated dish in its own right.

If you need to make it slightly ahead, cook the zucchini and refrigerate it undressed. The dressing keeps at room temperature for up to three days. When you are ready to serve, either bring the zucchini to room temperature and dress it cold — accepting a less-absorbed result — or warm it briefly in a skillet with a drop of neutral oil over medium heat for 2 minutes per side, then dress it while hot. The second approach recovers most of what the dish loses from refrigeration.

Approximate Nutrition Per Serving

All values are approximate estimates for informational purposes only. Based on 4 servings. Values vary with zucchini size and the amount of dressing absorbed.

What It Leaves Behind

There is something instructive about a dish that takes twenty minutes and still requires you to pay attention — to the cut of the vegetable, to the exact moment of pressure release, to the temperature of the zucchini when the dressing goes on. Pressure Cooker Zucchini with Five Spice Dressing teaches a version of precision that has nothing to do with complexity: just the understanding that small decisions, made at the right moment, are what separate a forgettable vegetable from one that earns its place on the table.

Make it once and you will understand what the pressure cooker actually does. Make it again and you will start adjusting the dressing to your own palate — which is where any recipe worth keeping eventually leads.