Tomatillo and Serrano Dip
A bright, smoky roasted dip with charred tomatillos, serrano peppers, and fresh cilantro finished with lime. The roasting process mellows the heat while adding depth, creating a versatile condiment perfect with tortilla chips, as a taco topping, or alongside grilled meats and vegetables.
- Prep
- 10 min
- Cook
- 12 min
- Wait
- 5 min
- Total
- 27 min
- Makes
- 2 cups (480 ml) dip
Steps
Before you start
- Line a large baking sheet with foil for easy cleanup
- Have lime juice freshly squeezed and ready
- Remove serrano stems and seeds if you prefer less heat (optional)
- Let the roasted mixture cool slightly before blending so the cilantro stays bright green
Roast vegetablesOven 425°F / 220°C
- Preheat your oven to 425°F (220°C).
- Toss the tomatillos, serrano peppers, onion halves, and garlic cloves with olive oil and a pinch of salt on the lined baking sheet.
- Spread them in a single layer.
- Roast for 12–14 minutes, stirring halfway through, until the tomatillos are softened and blistered and the onion and garlic are charred at the edges.
- The peppers should have blackened spots and be slightly collapsed.
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Ready when: Tomatillos are soft and blistered, onion and garlic are caramelized, peppers have blackened spots
Tip: Don't skip the char—it adds essential smoky depth. Keep the pan on one rack level so everything cooks evenly.
Cool and peel
- Remove the sheet from the oven and let the roasted vegetables cool for 3–5 minutes until they're cool enough to handle.
- Squeeze the softened garlic cloves out of their skins and discard the peels.
- Slip the charred onion skin off (it should come away easily) and discard.
- Leave the tomatillos and peppers as they are—the charred skin adds flavor.
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Ready when: Garlic and onion skins peel away easily
Tip: If the garlic is still too hot, run it briefly under cool water. The charred skin on the peppers is intentional and adds authentic flavor, so don't be tempted to peel them.
Blend to desired texture
- Transfer the peeled garlic, roasted tomatillos (with their charred skin), serranos, and roasted onion to a food processor or blender.
- Add the cilantro, lime juice, a generous pinch of sea salt, and black pepper.
- Pulse 5–6 times until you reach your preferred consistency—some people like it chunky and rustic, others prefer it smooth.
- If using the optional crema, add it now and pulse once or twice to combine.
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Ready when: Dip reaches your desired consistency, cilantro is evenly distributed
Tip: Pulse rather than blend continuously so the cilantro stays bright green and the texture stays lively. Over-blending turns it dull and muddy.
Taste and adjust
- Taste the dip and adjust seasoning with more sea salt, lime juice, or black pepper as needed.
- Remember that flavors will develop and mellow slightly as it cools.
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Ready when: Seasoning is balanced to your taste
Tip: Add lime juice and salt gradually—both are easy to add more of but impossible to remove if you overdo it.
Good to know
Tips
- For authentic flavor, char the vegetables until they're visibly blackened in spots—this step is non-negotiable and transforms the dip from good to exceptional.
- If you prefer a creamier dip, stir in the Mexican crema or sour cream at the end rather than blending it in, which keeps more texture and tang.
- This dip is best served the same day but at room temperature rather than cold—the flavors and aromatics shine when it's not refrigerated.
- Serve alongside warm flour tortilla chips, with carne asada tacos, as a condiment for grilled chicken or fish, or alongside charred vegetables and queso fresco.
Make ahead
Roast the vegetables up to 24 hours ahead and store them in an airtight container in the fridge. Blend just before serving so the cilantro stays bright green and the dip tastes fresh.
Storage & reheating
Room temperature (covered): up to 2 hours. Refrigerator: up to 5 days in an airtight container. Freezer: up to 3 months in a freezer-safe container or zip-top bag. To reheat or thaw, leave in the fridge overnight, then bring to room temperature before serving, or warm gently in a saucepan over low heat, stirring occasionally. Do not microwave as the texture can become watery.
Substitutions
- serrano peppers → jalapeño peppers or 1–2 habaneros for extra heat. Jalapeños will be milder; habaneros will be much spicier. Start with 1 habanero and add more if you want more heat.
- fresh cilantro leaves, loosely packed → fresh parsley or a mix of cilantro and parsley. If you dislike cilantro's soapy quality, parsley gives a fresh, herbaceous note without that flavor.
- white onion, unpeeled → yellow onion or red onion. White onion is traditional and the mildest option. Yellow will be slightly sweeter, red more assertive.
- fresh lime juice → fresh lemon juice or vinegar (use ½ tbsp / 7.5 ml for vinegar to avoid overseasoning). Lime is traditional and brightest; lemon is subtly different but works well. Vinegar adds tang but use sparingly.
