Mole-Spiced Beef Tacos with Pickled Red Onion

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

Rich mole-spiced ground beef tucked inside warm corn tortillas, topped with tangy pickled red onions for a burst of flavor. This mexican-inspired tacos & burritos ready in about 40 minutes pairs ground beef, olive oil, small, finely chopped onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 400 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: 25 min Cook: 15 min Serves 4 Mexican cuisine 400 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a small bowl, combine 1/2 medium thinly sliced red onion, 1/2 cup apple cider vinegar, 1/2 cup water, and 1 tbsp sugar. Stir until sugar dissolves and let sit for at least 20 minutes to pickle.
  2. Step 2: Heat 1 tbsp olive oil in a skillet over medium-high heat. Add 1 small finely chopped onion and sauté for 3 minutes until translucent. Add 2 minced garlic cloves and cook for 30 seconds until fragrant.
  3. Step 3: Add 1 lb ground beef, breaking it apart with a spatula. Cook for 6-8 minutes until browned and cooked through. Stir in 1/3 cup mole sauce, 1 tsp salt, and 1/2 tsp black pepper; cook for 2 more minutes until heated through and well combined.
  4. Step 4: Warm 8 small corn tortillas in a dry skillet or microwave. Assemble tacos by spooning mole-spiced beef into each tortilla, topping with pickled red onions, 1/4 cup chopped cilantro, and serving with 4 lime wedges for squeezing.

Frequently asked questions

How long does Mole-Spiced Beef Tacos with Pickled Red Onion take to make?

Total time is about 40 minutes (25 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 Mole-Spiced 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 ground beef from drying out.

Can I substitute ingredients in Mole-Spiced 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 Mole-Spiced 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 Mole-Spiced Beef Tacos with Pickled Red Onion?

Mexican tacos & burritos 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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