The ground chicken distinction matters more than it might seem. America's Test Kitchen was direct last year: use ground chicken, not ground chicken breast labeled 99% fat-free. Standard ground chicken includes dark meat and has the fat content needed to hold together and stay flavorful on the grill. Ground chicken breast dries out even with zucchini in the mix.

The squeeze step is where most people go wrong. Work the shredded zucchini in small handfuls over the sink, pressing until the water stops running freely. The goal isn't to wring it completely dry you want the moisture still locked inside the vegetable tissue to do its job, per Wholefully. The squeeze removes the loose surface water that would otherwise make the patty too wet to bind. That distinction is the whole ballgame.

The base recipe here uses panko breadcrumbs one cup per pound of chicken which gives first-time makers a more forgiving structure. Ambitious Kitchen last month tested a version with no breadcrumbs at all, relying on the egg, squeezed zucchini, and the fat in standard ground chicken. It holds. That version is covered under flavor directions below; start with the panko version and treat breadcrumb-free as a next step once the moisture balance feels intuitive.

What to have ready:

• Box grater or food processor
• Large mixing bowl
• Instant-read thermometer
• Grill or nonstick skillet

On the thermometer: chicken patties don't give the same visual cues as beef. The exterior can look done while the center isn't. Check the temperature every time, no exceptions.

One formula. Four patties. Works on a gas or charcoal grill, or a stovetop skillet. Total time runs 21–25 minutes, per Wholefully and Ambitious Kitchen.

Step 1: Shred and squeeze the zucchini

Finely shred one medium zucchini on the large holes of a box grater. Working in small handfuls, squeeze firmly over the sink until the water stops running freely, per Wholefully. The shredded zucchini should feel compact but not bone dry. Set it aside and move to the bowl.

Step 2: Mix the patty

Combine the squeezed zucchini with 1 lb. standard ground chicken, 1 finely shredded small onion, 1 egg, 1 cup panko breadcrumbs, ½ tsp. kosher salt, and ½ tsp. black pepper, per Wholefully. Mix until everything is evenly distributed, then stop. Ground chicken tightens quickly when overworked evenly incorporated is the finish line, not the starting point for more mixing.

Step 3: Shape and chill

Divide the mixture into four equal portions and shape each into a ¾-inch-thick patty, per America's Test Kitchen. Press a shallow ½-inch divot into the center of each with your fingertips. Without it, the center rises and the edges thin out during cooking, which means uneven doneness.

Refrigerate the shaped patties for at least 15 minutes before grilling, per America's Test Kitchen. Cold patties are firmer going onto the grates and hold their shape better during the cook.

Step 4: Prep the grill or skillet

For the grill: preheat to medium-high heat, around 400°F, then brush the grates with oil immediately before the patties go on, per Ambitious Kitchen. For stovetop: heat ½ tablespoon of oil in a nonstick skillet over medium heat until shimmering, per Ambitious Kitchen.

Step 5: Cook without pressing

Place the patties down and leave them alone. On a grill: 6–8 minutes per side. On stovetop: 4–5 minutes per side, per Ambitious Kitchen. Do not press the patties down. Pressing forces out the moisture the zucchini is providing.

If a patty resists when you try to move it, the sear hasn't formed. Leave it. A properly seared patty releases from the grates cleanly; forcing the flip before that point tears the patty apart.

Step 6: Pull at 165°F, then rest

Check the internal temperature at the thickest point. Pull at 165°F, per America's Test Kitchen and Ambitious Kitchen. One source targets 160°F, but 165°F is the USDA safe temperature for ground poultry. Don't split the difference on a food safety question.

Let the burgers rest five minutes before serving, per America's Test Kitchen.

Patties won't hold their shape. The zucchini wasn't squeezed enough, and too much free water got into the mixture. Squeeze more aggressively next time. If the current batch feels loose after mixing, working in an extra tablespoon of panko before forming may help it come together.

Patties stick to the grates and tear. Either the grates weren't hot and well-oiled before the patties went on, or the flip came too early. Let the sear set fully before moving anything. For stovetop cooking, nonstick handles high-moisture patties more predictably than cast iron, per Ambitious Kitchen.

Dense, rubbery texture. The mixture was overworked. Combine the ingredients until just incorporated and stop. Going back into the bowl to "make sure it's mixed" is usually what causes this.

Still dry despite the zucchini. Check the label on the ground chicken. America's Test Kitchen last year was explicit: use ground chicken, not ground chicken breast labeled 99% fat-free. Switching to standard ground chicken is the single biggest correction available.

Overcooked interior, underdone-looking exterior. The surface of a chicken burger can look finished before the center is safe. Cook by temperature, not appearance. Pull at 165°F, per America's Test Kitchen.

Ground chicken's mild flavor means a small number of well-chosen ingredients can carry the plate, as America's Test Kitchen noted last year. That cuts both ways. The patty won't compete with anything, but it needs a real sauce or a seasoned mix-in to be interesting. Two tested directions below.

Mediterranean. Build the flavor in the sauce, not the patty. Combine mayo, crumbled feta, minced fresh dill, lemon juice, and lemon zest, then spread it on the bun, per Wholefully. ATK takes this profile further with capers and garlic folded into the feta sauce, which they confirmed works well against mild ground chicken, per America's Test Kitchen. A splash of acid lemon juice or a light vinaigrette applied while the burger is still warm brightens the plate without softening the grilled exterior.

Buffalo-style. Build the heat directly into the patty instead mix buffalo sauce and spices into the meat before shaping. This is the breadcrumb-free version: it holds together without them, per Ambitious Kitchen last month. Top with cheddar, avocado, and extra buffalo sauce; cover the grill for the last minute to melt the cheese. Total time stays under 30 minutes.

The Mediterranean version is a cleaner starting point. The sauce is forgiving and the patty stays simple. The buffalo version, once the method is familiar, is the right place to try dropping the breadcrumbs.

Cooked patties keep in an airtight container for 3–4 days in the refrigerator and freeze for up to three months, per Ambitious Kitchen. Reheat in the microwave.

Zucchini is at peak abundance right now in mid-summer, and Wholefully frames these burgers as one of the better uses for a vegetable that tends to pile up on the counter. Once the method clicks squeezed zucchini, standard ground chicken, thermometer, five-minute rest it becomes a reliable weeknight option that doesn't require much planning. The variations give it enough range to hold up through the season.