Slow-Simmered Beef Barbacoa with Pickled Red Onions

By AislePrompt Editorial · Published 2026-08-06 · Updated 2026-08-06

Tender, slow-cooked beef barbacoa richly seasoned with warm spices, paired with tangy pickled red onions to brighten each bite. This Mexican-inspired beef recipe, ready in about 500 minutes, pairs beef chuck roast, chipotle peppers in adobo sauce, garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 450 calories and feeds 6, 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.

Ingredients

• 3 lbs, cut into large chunks beef chuck roast
• 2 peppers, chopped chipotle peppers in adobo sauce
• 5, minced garlic cloves
• 2 tsp ground cumin
• 1 tsp dried oregano
• 1/4 cup apple cider vinegar
• 1 cup beef broth
• 2 tsp salt
• 1 tsp black pepper
• 1 large, thinly sliced red onion
• 1 cup white vinegar
• 1 tbsp sugar
• 1 cup water
• 2 bay leaves

The slow cooker we’d leave this in all day → Best Slow Cookers in 2026: Top Picks + Buying Guide

Instructions

1. Step 1: In a large slow cooker, combine 3 lbs beef chuck roast chunks, 2 chopped chipotle peppers in adobo, 5 minced garlic cloves, 2 tsp ground cumin, 1 tsp dried oregano, 1/4 cup apple cider vinegar, 1 cup beef broth, 2 tsp salt, and 1 tsp black pepper. Stir to coat the beef evenly.
2. Step 2: Add 2 bay leaves on top, cover, and cook on low for 8 hours until beef is fork-tender and shreds easily.
3. Step 3: Meanwhile, prepare pickled onions by combining 1 cup white vinegar, 1 tbsp sugar, 1 cup water, and 1 tsp salt in a saucepan. Bring to a boil until sugar dissolves.
4. Step 4: Place 1 large thinly sliced red onion in a heatproof jar or bowl. Pour hot vinegar mixture over onions, submerge fully, and let sit at room temperature for at least 1 hour.
5. Step 5: Once beef is done, shred with two forks and mix well with cooking juices.
6. Step 6: Serve beef barbacoa topped with a generous amount of pickled red onions and fresh cilantro if desired.