Smoky Grilled Beef Tacos with Pickled Red Onion

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

Juicy grilled beef slices seasoned with smoky spices, served in warm tortillas topped with tangy pickled red onions and fresh cilantro for a vibrant taco experience. This mexican-inspired beef ready in about 35 minutes pairs flank steak, smoked paprika, ground cumin for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 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: 20 min Cook: 15 min Serves 4 Mexican cuisine 350 cal/serving
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Ingredients

Instructions

  1. Step 1: In a small bowl, combine 1 teaspoon smoked paprika, 1 teaspoon ground cumin, 1/2 teaspoon garlic powder, 1 teaspoon sea salt, and 1/2 teaspoon black pepper. Rub this spice mix evenly over 1 pound flank steak.
  2. Step 2: Heat 2 tablespoons olive oil in a grill pan over medium-high heat until shimmering. Add the seasoned flank steak and grill for 4-5 minutes per side for medium rare, until nicely charred and cooked to your liking. Remove from heat and let rest for 10 minutes.
  3. Step 3: Meanwhile, place 1 small thinly sliced red onion in a jar. Heat 1/2 cup white vinegar with 1 tablespoon sugar until sugar dissolves, then pour over the onions. Let them pickle for at least 15 minutes.
  4. Step 4: Slice the rested steak thinly against the grain. Warm 8 small corn tortillas in a dry skillet for about 30 seconds per side until pliable.
  5. Step 5: Assemble tacos by layering steak slices on each tortilla, topping with pickled red onions and chopped 1/4 cup cilantro leaves. Serve with 4 lime wedges to squeeze over.

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Frequently asked questions

How long does Smoky Grilled Beef Tacos with Pickled Red Onion take to make?

Total time is about 35 minutes (20 min prep + 15 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 Smoky Grilled Beef Tacos with Pickled Red Onion?

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 flank steak from drying out.

Can I substitute ingredients in Smoky Grilled Beef Tacos with Pickled Red Onion?

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 Smoky Grilled Beef Tacos with Pickled Red Onion 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.

What goes well with Smoky Grilled Beef Tacos with Pickled Red Onion?

Mexican beef like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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