Step-by-Step Instructions
1. Layer the Aromatics
Scatter the sliced yellow onions and the undrained canned green chilies evenly across the bottom of your slow cooker liner. This creates a flavorful, elevated bed for the beef to rest on as it cooks.
2. Season the Flat Iron Steak
Pat the flat iron steak dry with paper towels. Season both sides generously with salt, coarse black pepper, and garlic powder. Place the steak directly over the bed of onions and chilies.
3. Whisk and Pour the Sauce
In a small bowl, whisk together the barbecue sauce and the bourbon (or apple juice) until smooth. Pour the mixture evenly over the steak, making sure the top of the meat is completely coated.
4. Slow Cook to Perfection
Cover with the lid and set your slow cooker to:
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LOW for 7 to 8 hours (Recommended for maximum tender, shreddable beef)
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HIGH for 4 to 5 hours
5. Slice or Shred & Serve
Once fully tender, transfer the flat iron steak to a cutting board. You can either slice it thinly against the grain for tender steak strips or use two forks to gently pull it into hearty shredded beef.
Stir the savory juices in the slow cooker, then fold the meat and caramelized onions back into the pot so every bite is soaked in that rich July Fourth glaze.
Celebration Serving Suggestions
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Build Better Sliders: Pile the warm, saucy flat iron beef onto toasted brioche buns with a scoop of cool, crunchy coleslaw.
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Festive Platter: Serve sliced over sweet corn on the cob, baked beans, and crisp potato wedges for a complete 4th of July feast.
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Pro-Tip: If using bourbon, the alcohol bakes off during the long cook time, leaving behind a rich oak-and-vanilla undertone that pairs perfectly with smoky barbecue
