Grilled Poblano and Queso Fresco Tacos with Pickled Onions

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Smoky grilled poblano peppers paired with creamy queso fresco and tangy pickled onions, wrapped in warm tortillas for a regional street-food inspired taco. This mexican (vegetarian) ready in about 35 minutes pairs medium poblano peppers, small corn tortillas, queso fresco, crumbled for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 250 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 20 min Serves 4 Mexican cuisine 250 cal/serving
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Ingredients

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Instructions

  1. Step 1: Combine 1/2 cup white vinegar, 1/2 cup water, 1 tbsp granulated sugar, and 1 tsp kosher salt in a small saucepan. Bring to a boil, then remove from heat and pour over 1 medium thinly sliced red onion in a heatproof bowl. Let sit for at least 30 minutes to pickle.
  2. Step 2: Preheat a grill or grill pan to medium-high heat. Place 3 medium poblano peppers directly on the grill, turning every 2-3 minutes until the skins are charred and blistered all over, about 10 minutes.
  3. Step 3: Transfer the peppers to a bowl and cover tightly with plastic wrap to steam for 10 minutes, then peel off the charred skins, remove seeds, and slice into strips.
  4. Step 4: Warm 8 small corn tortillas on the grill for 30 seconds per side until pliable. Fill each tortilla with grilled poblano strips, 1/8 cup crumbled queso fresco, a few pickled onion slices, and garnish with fresh cilantro leaves before serving.

Frequently asked questions

How long does Grilled Poblano and Queso Fresco Tacos with Pickled Onions take to make?

Total time is about 35 minutes (15 min prep + 20 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Grilled Poblano and Queso Fresco Tacos with Pickled Onions?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep medium poblano peppers from drying out.

Can I substitute ingredients in Grilled Poblano and Queso Fresco Tacos with Pickled Onions?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Grilled Poblano and Queso Fresco Tacos with Pickled Onions for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Grilled Poblano and Queso Fresco Tacos with Pickled Onions vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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