Slow-Cooked Beef Tacos with Pickled Onions

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

Flavorful ground beef simmered with spices, served on warm tortillas with tangy pickled onions. This mexican ready in about 35 minutes pairs ground beef, onion, garlic 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.

★ 4.1 (15 ratings) Prep: 15 min Cook: 20 min Serves 4 Mexican cuisine 400 cal/serving
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Ingredients

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Instructions

  1. Step 1: For pickled onions: Combine red onion, vinegar, water, sugar, and salt in a bowl. Stir until sugar dissolves, then let sit for 15 minutes.
  2. Step 2: Cook ground beef in a skillet over medium heat until browned. Add onion and garlic, cooking for 2 more minutes.
  3. Step 3: Stir in cumin, chili powder, salt, and beef broth. Simmer for 10 minutes, stirring occasionally.
  4. Step 4: Warm corn tortillas in a dry skillet for 10 seconds per side.
  5. Step 5: Assemble tacos: Place beef mixture on tortillas, top with cilantro and pickled onions.

Frequently asked questions

How long does Slow-Cooked Beef 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 Slow-Cooked Beef 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 ground beef from drying out.

Can I substitute ingredients in Slow-Cooked Beef 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 Slow-Cooked Beef 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.

What goes well with Slow-Cooked Beef Tacos with Pickled Onions?

Mexican mexican 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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