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

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.

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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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