Cilantro jalapeƱo pesto takes the earthiness of traditional pesto and layers in a fresh fiery bite. It makes a perfect pasta sauce, sandwich spread, or spicy dip for the heat-inclined. Donāt overlook it, too, for use as an out-of-the-box taco sauce, especially for steak or chicken tacos. Beyond the jalapeƱo fire, the cilantroās freshness and the hint of lime work very well with the flavors typical in Mexican cuisine.
You can turn up the heat even more by substituting in serrano peppers for the jalapeƱo. They provide a similar flavor profile (bright and grassy), only with a big uptick in heat. Serrano peppers can double the heat (and sometimes more) of jalapeƱo. You can also opt for additional jalapeƱo pepper to increase the spiciness, but careful with the pestoās overall balance if you go this direction. Add additional minced jalapeƱo a teaspoon at a time and taste for balance often.
š¶ļø Quick recipe snapshot
| Flavor profile | Cilantro first, bright and green, with basil rounding it out and Parmesan adding salt and savour underneath. Lime sits in the background. |
| Primary heat source | JalapeƱo, deseeded, so the heat is grassy and even instead of sharp. |
| Heat level | Mild to moderate. Two deseeded jalapeƱos across a whole batch warms it without taking it over. |
| Texture | Thick and coarse, closer to a spoonable paste than a pourable sauce. Loosen it with pasta water or more oil when you need it looser. |
| Best uses | Tossed through pasta, spread in a sandwich, spooned over steak or chicken tacos, or served as a dip. |
| Customization ideas | Swap the jalapeƱo for serrano to push the heat, trade pine nuts for pepitas to lean it further toward Mexico, or leave the cheese out entirely. |
| Before you start | A food processor, and everything measured out. Nothing gets cooked, so the whole thing takes about ten minutes. |
Flavor notes
Swap the basil for cilantro and a pesto stops sounding Italian and starts sounding Mexican, and thatās most of whatās going on here. Cilantro is the main story, green and citrusy and a little soapy if thatās how your genes read it. The half cup of basil underneath keeps the sauce recognizable as pesto instead of tipping it into salsa verde.
Parmesan and pine nuts do the traditional jobs, salt and fat, and both matter more than usual because thereās so little oil in this version. Three tablespoons is lean for a pesto, so the water goes in alongside to help it move. You get a thicker, greener sauce that tastes more of herb and less of olive oil.
The jalapeƱo arrives late. Deseeded and minced through a whole batch, it spreads into a low background warmth instead of hitting any one bite, and its own grassiness lines up with the cilantro. And the lime is a hint by design, enough to lift the herbs without turning the sauce sour.
Adaptation ideas
Most of the levers here are about balance, not heat, because jalapeƱo at this dose stays gentle.
- Go easier on the garlic. Three raw cloves is assertive for a cup of cilantro, and raw garlic keeps getting stronger as the pesto sits. Two cloves, or even one, still reads as garlicky the next day.
- Want more lime? A teaspoon is a whisper. When you take it to a full tablespoon the sauce turns into something closer to cilantro-lime, and that version is the better one for fish and tacos.
- Loosen it with more olive oil, a tablespoon at a time, if you want it pourable instead of spoonable.
- Out of pine nuts? Walnuts or almonds work straight across, and pepitas push it further toward Mexico for less money than pine nuts.
- Leave the cheese out and it goes vegan easily, though youāll want a little more salt and lime to fill the gap the Parmesan leaves.
- Too hot? Drop to one jalapeƱo. Our guide to cooling down a sauce that went too far covers the rest, and a milder jalapeƱo substitute is another route.
Serving ideas
A batch this size covers a pound of pasta or a week of sandwiches, so itās worth deciding where itās going before you make it.
- Through pasta. Loosen it with a few spoonfuls of the starchy cooking water before it meets the noodles, because this pesto is too stiff to coat on its own.
- On tacos. Spooned over steak or chicken, where it does the job a salsa verde would and brings cheese and nuts along with it.
- In a sandwich. Spread it on the bread instead of mixing it through the filling, so it stays where you put it. Itās very good under grilled chicken or against a sharp cheese.
- With fish or shrimp. A spoonful on a grilled fillet, ideally the lime-forward version from the adaptations above.
- Stirred into rice or beans off the heat, so the herbs keep their colour.
- As a dip thinned with a little sour cream or yoghurt, which knocks the garlic back at the same time.
Storage notes
Cilantro dulls faster than basil does, so a pesto built on it looks its best on day one and fades from there. The colour goes before the flavour does.
Keep it in a small airtight jar in the fridge and pour a thin layer of olive oil over the surface, or press cling film flat onto it. Either one keeps the air off, and air is what turns the top of the jar army green. If you want the bright version, use it within a few days.
For anything longer, freeze it. Spoon it into an ice cube tray, freeze solid, then bag the cubes, and youāve got single portions ready for pasta or rice. Freezing costs you a little texture and none of the flavour. But if you know youāre freezing from the start, leave the cheese out and stir it in after thawing.
Like this recipe? Youāll love these too:
- Easy JalapeƱo Dip: Another no-cook jalapeƱo job, and about as fast as this one.
- JalapeƱo Mango Salsa: Fresh, sweet and hot, and a good partner on the same taco.
- Easy Pico De Gallo: The simplest fresh salsa there is, worth having in the fridge alongside.
50 quick, bold sauces and salsas: classic salsas and fun twists, BBQ sauces with a kick, and dippers with bang. Simple to make, big on flavor.
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Cilantro JalapeƱo Pesto
Ingredients
- 1 cup cilantro packed loosely
- 1/2 cup basil leaves
- 1/2 cup Parmesan cheese grated
- 1/4 cup pine nuts
- 2 jalapeƱo peppers deseeded and minced
- 3 cloves garlic
- 3 tablespoons olive oil
- 2 tablespoons water
- 1 teaspoon lime juice
- 1/4 teaspoon salt
- 1/4 teaspoon black pepper
Instructions
- Add all ingredients into a food processor, then pulse blend the mix until you reach your desired pesto consistency.
- Add additional salt and black pepper to taste, then serve.
