
Zucchini and Basil Risotto with Lemon and Parmesan
A creamy, summery stovetop risotto with golden seared zucchini, a flood of fresh basil, and a bright finish of lemon zest and juice. The zucchini is browned separately so it stays sweet and tender instead of turning mushy.
- Prep
- 17 min
- Cook
- 40 min
- Wait
- 3 min
- Total
- 1 hr
- Makes
- About 6 cups (4 main-course servings)
Steps
Before you start
- Risotto needs near-constant stirring for about 20 minutes, so have everything chopped, measured and within reach before you turn on the heat.
- Keep the broth hot (barely simmering) the whole time. Cold broth stalls the cooking and makes the rice uneven.
- Use true Arborio (or Carnaroli) rice and do not rinse it; the surface starch is what makes the risotto creamy.
- Grate the Parmesan on the finest holes of a grater so it melts smoothly into the rice.
Prep and heat broth
- Dice the zucchini, onion and garlic, grate the Parmesan and lemon zest, squeeze the lemon, and tear the basil.
- Pour the vegetable broth into a 2- to 3-quart saucepan and bring it to a bare simmer over medium heat, then reduce to low and keep it hot with a ladle nearby.
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Ready when: Broth is steaming with tiny bubbles at the edges, not boiling hard.
Tip: Boiling hard reduces the broth and makes the risotto too salty.
Sear the zucchini
- Heat 1 tbsp olive oil in a 12-inch skillet over medium-high heat until it shimmers.
- Add the diced zucchini in a single layer and sprinkle with ½ tsp salt.
- Cook, stirring only every 1–2 minutes, for 6–8 minutes.
- Transfer to a bowl.
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Ready when: Zucchini is golden brown at the edges and just tender when pierced with a fork, but still holds its shape.
Tip: Don't crowd the pan; if the zucchini steams instead of browning, cook it in two batches.
Soften the onion
- Place the 3½- to 4-quart pot over medium heat.
- Add 2 tbsp butter and 1 tbsp olive oil.
- When the butter foams, add the onion and cook, stirring often, for 4–5 minutes.
- Add the garlic and stir for 30 seconds.
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Ready when: Onion is soft and translucent with no browning; garlic smells fragrant.
Tip: If the onion or garlic starts to brown, lower the heat. Browned bits turn bitter.
Toast the rice
- Add the Arborio rice and stir constantly for about 2 minutes so every grain is coated in fat.
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Ready when: Edges of the grains turn translucent while the centers stay white, and the rice smells nutty.
Deglaze with wine
- Pour in the white wine and stir until it is almost completely absorbed and the sharp alcohol smell has faded.
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Ready when: Only a thin film of liquid remains when you drag the spoon across the bottom of the pot.
Add broth gradually
- Stir in ½ tsp salt.
- Add 1 ladle (about ½ cup / 120 ml) of hot broth and stir often, keeping the risotto at a gentle bubble.
- When the liquid is nearly absorbed, add another ladle.
- Continue for 18–20 minutes, using about 4½ cups (1.1 L) of broth.
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Ready when: Rice is creamy and loose, and a grain bitten in half is tender with just a slight firmness (al dente) at the very center.
Tip: If the rice is sticking, lower the heat slightly; if it's barely bubbling, raise it. Taste a grain at 16 minutes.
Fold in zucchini
- Stir the seared zucchini and any juices into the rice.
- Add another ladle of broth if needed so the risotto flows slowly when you tilt the pot, and cook for 1–2 minutes to warm the zucchini through.
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Ready when: Risotto is loose and wavy, not stiff or soupy; a spoon dragged through leaves a trail that slowly closes.
Tip: Risotto thickens as it stands, so stop while it is slightly looser than you want it.
Finish and rest
- Remove the pot from the heat.
- Vigorously stir in the cold butter cubes, Parmesan, lemon zest, lemon juice and most of the basil.
- Season with black pepper and more salt or lemon juice to taste.
- Cover and let stand for 3 minutes.
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Ready when: Risotto is glossy, creamy and flows gently across a plate.
Tip: Adding lemon juice off the heat keeps its flavor bright and prevents the dairy from curdling.
Serve immediately
- Spoon into warm shallow bowls, tapping the bowl so the risotto spreads.
- Top with the reserved basil leaves, extra Parmesan and a grind of pepper.
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Tip: Serve right away; risotto continues to thicken as it cools.
Good to know
Tips
- Brown the zucchini separately and add it at the end; cooked in the rice for the whole time, it turns to mush and waters down the dish.
- Add broth in small amounts and stir often. This coaxes starch from the rice for natural creaminess without cream.
- Tear the basil instead of chopping to prevent bruising and darkening, and add it off the heat to preserve its aroma.
- Finish with lemon zest first, then add juice a little at a time, tasting as you go, since lemons vary in acidity.
Make ahead
"Sear the zucchini and chop the onion and garlic up to 1 day ahead and refrigerate separately in airtight containers. Risotto itself is best made fresh."
Storage & reheating
"Room temperature: no more than 2 hours. Fridge: cool quickly and refrigerate in an airtight container up to 3 days. Freezer: not recommended, as the rice turns grainy. Reheat in a saucepan over low heat with a splash of broth or water, stirring gently, until hot, about 5 minutes."
Substitutions
- Arborio rice → Carnaroli or Vialone Nano rice. Same quantity and timing; Carnaroli is slightly more forgiving and stays firmer.
- dry white wine, such as Pinot Grigio → Additional vegetable broth plus 1 tsp white wine vinegar. Use ½ cup (120 ml) broth for an alcohol-free version.
- Parmigiano-Reggiano → Vegetarian hard Italian-style cheese or Pecorino Romano. Traditional Parmigiano-Reggiano uses animal rennet; choose a vegetarian-labeled hard cheese if needed. Pecorino is saltier, so reduce added salt.
- unsalted butter → Extra-virgin olive oil. Use 2 tbsp for a dairy-lighter finish; the texture will be slightly less silky.
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- Meal
- Dinner
- Cuisine
- Mediterranean
- Method
- Stovetop





