Chiles Rellenos (Cheese-Stuffed Poblano Peppers with Tomato Sauce)

Chiles rellenos are one of Mexico’s most recognisable stuffed pepper dishes, traditionally centred on roasted poblano peppers with a soft, mildly earthy flavour. In this version, the peppers are filled with stretchy Oaxaca cheese, wrapped in a light beaten-egg batter and fried until puffed and golden. A simple tomato, onion, garlic and cumin sauce keeps the dish bright rather than heavy, cutting through the richness of the molten cheese. Served straight away, they offer the classic combination of crisp coating, tender pepper and a melting centre, making them well suited to a generous vegetarian dinner or a substantial side.
Cuisine style Mexican home-style cooking
Spice level Mild
Cooking style Make-ahead friendly
Time commitment Under 2 hours

Why this recipe works

  • Clear texture contrast: Blistered poblanos, molten cheese and a puffed egg coating give the dish its signature soft-centred, crisp-edged finish.
  • Balanced richness: The tomato sauce brings acidity and sweetness, cutting through the fried batter and melted cheese without overwhelming the peppers.
  • Classic batter method: Whisked egg whites create a light coating that puffs as it fries, rather than forming a heavy breadcrumb-style crust.

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Authenticity notes

  • Roasted and peeled poblanos: Blistering the peppers before stuffing is central to the dish: it softens the flesh, removes the tough skin and adds a gentle smoky flavour.
  • Oaxaca cheese: Queso Oaxaca is prized here for its mild flavour and elastic melt, which gives chiles rellenos their characteristic stretchy centre.

Timing notes

  • Serve immediately: Chiles rellenos are best eaten as soon as they are fried, while the batter is still crisp and the cheese is fully melted.
  • Prep is the main work: Roasting, peeling, stuffing and battering take more attention than the frying itself, so have the sauce warm and the oil ready before coating the peppers.

Common mistakes

  • Oil too hot or too cool: Keep the oil close to 180°C (355°F): cooler oil makes the batter greasy, while hotter oil browns the outside before the cheese has melted.
  • Wet peppers: Dry the peeled poblanos well before flouring and battering; excess moisture stops the coating from clinging and can make the oil spit.
  • Overfilling the pan: Fry only a couple of peppers at a time so the oil temperature stays steady and the coating has room to puff.

Ingredient swaps

  • Oaxaca cheese alternative: Mozzarella is the closest widely available substitute, offering a similarly mild flavour and stretchy melt.
  • Cumin option: Ground cumin can replace cumin seeds if you prefer a smoother tomato sauce with no whole spices.

Equipment you'll need

Ingredients
Instructions
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  1. Heat the oven to 230°C (445°F). Put the poblanos on a baking tray and roast for 18 to 22 minutes, turning once, until the skins are blistered and blackened in patches.
  2. Transfer the peppers to a bowl and cover tightly to steam for 10 minutes. When cool enough to handle, peel off the loose skin, then cut a slit down one side and remove the seeds, keeping the stems intact.
  3. Pull the queso Oaxaca into thick strands and stuff it into the peppers, filling them well but without forcing. Pinch the slit closed as best you can; if a little cheese shows, that is fine.
  4. Dice the tomatoes and slice the onion; finely grate the garlic. Warm 1 tbsp sunflower oil in a saucepan over medium heat, add the onion with a pinch of the salt, and cook for 6 to 8 minutes until softened.
  5. Stir in the garlic and cumin seeds for 30 seconds, then add the tomatoes and the remaining salt. Simmer for 12 to 15 minutes, stirring occasionally, until saucy and the tomatoes have broken down; keep warm on a low heat.
  6. Set up a plate with the plain flour. Separate the eggs into two bowls, then whisk the whites to stiff peaks; whisk the yolks briefly, then fold them into the whites to make a light batter.
  7. Pour the remaining sunflower oil into a large frying pan to a depth of about 2 to 3 cm and heat to 180°C (355°F). Dust one stuffed pepper in flour, shake off the excess, dip into the egg batter to coat, then lower into the hot oil.
  8. Fry 2 peppers at a time for 2 to 3 minutes per side until puffed and deep golden, adjusting the heat to keep a steady sizzle. Lift out and drain briefly, then repeat with the remaining peppers.
  9. Spoon the warm tomato sauce onto plates and set the chiles rellenos on top. Serve straight away while the batter is crisp and the cheese is melting.

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Recipe notes

Tips

  • Dry the peeled peppers well before stuffing; excess moisture makes the batter slip and can cause oil to spit.
  • Keep the oil close to 180°C (355°F); if it is cooler the batter absorbs oil, and if it is hotter the outside browns before the cheese melts.
  • Egg batter is not suitable for anyone who should avoid raw or lightly cooked eggs; use eggs stamped with the British Lion mark if serving vulnerable groups.

Substitutions

  • Replace Queso Oaxaca with mozzarella for a similar melt and stretch.
  • Replace cumin seeds with ground cumin for a smoother sauce; use the same amount.

Storage

  • Refrigerate up to 2 days
  • Cool completely, then refrigerate the peppers and sauce separately in airtight containers. Reheat the sauce gently in a saucepan; reheat the peppers on a baking tray at 200°C (390°F) for 10 to 15 minutes until piping hot, though the batter will soften.

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Recipe overview

  • Servings: 4 servings
  • Total time: 1h 30min (55min active)
  • Difficulty: Advanced
  • Cuisine: Mexican
  • Allergens:
    Eggs Gluten Milk Wheat

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