Dinner · Part 2 of 3: Instructions
Slow-Cooker Chipotle Bourbon Skirt Steak Fajitas Step-by-step instructions

- Prep
- Cook
- Total
- Serves
- 6
Before you start
Before beginning, ensure that your slow cooker is clean and positioned on a stable, heat-resistant surface. Prepare the ingredients by thinly slicing the skirt steak against the grain to maximize tenderness. Slice the onions and red bell peppers into uniform strips to encourage even cooking.
Mince the chipotles in adobo finely so the heat and smoky flavor distribute evenly throughout the dish. Measure out your glaze and have your serving toppings ready to go, as the final assembly happens quickly once the cheese is melted.
Ingredients at a glance (10)
- 2 lb skirt steak, thinly sliced
- 2 large sweet onions, thinly sliced
- 2 red bell peppers, sliced
- 2 chipotles in adobo, minced
- 3 tbsp bourbon-brown sugar fajita glaze
- smoked cheddar cheese, for serving
- flour tortillas, for serving
- avocado crema, for serving
- fresh cilantro, for serving
- lime wedges, for serving
Instructions
Layering and Preparation
- Layering the ingredientsPlace the sliced skirt steak, sweet onions, and red bell peppers into the slow cooker. Add the minced chipotles in adobo and pour the bourbon-brown sugar fajita glaze over the top. Use tongs to combine the ingredients gently so that the glaze coats the meat and vegetables evenly.Look for The ingredients should be arranged in an even layer to ensure consistent heat distribution during the cooking process.Tip Slice the onions and peppers into uniform strips to ensure they soften at the same rate as the steak.
The ingredients should be layered carefully, with the onions and peppers forming a bed for the steak. Everything should be moistened by the glaze, and the minced chipotles should be distributed to ensure no large pockets of heat are created. The slow cooker should be set to low, and the lid should be firmly in place to begin the long, slow simmer.
Slow Cooking Transformation
- Slow cooking the mixtureCover the slow cooker with the lid and set it to the low heat setting. Allow the mixture to cook for six hours. The steak should reach an internal temperature of at least 145°F (63°C) to ensure it is tender and safe for consumption. Once finished, let the meat rest for at least 3 minutes before serving.Look for The onions should be fully caramelized into the smoky steak juices and the meat should be tender enough to pull apart easily.Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)Tip Avoid opening the lid during the cooking time to maintain a consistent temperature and moisture level inside the cooker.
During the six-hour cook, the kitchen will fill with a rich, smoky aroma. The steak will release its natural juices, which combine with the bourbon-brown sugar glaze to form a thick, savory sauce.
The onions will soften significantly, turning a deep golden brown. Check that the liquid level is sufficient to keep the meat submerged in the flavorful braising juices.
Melting and Finishing
- Adding cheese and servingOpen the lid and sprinkle the shredded smoked cheddar cheese over the hot steak and vegetable mixture. Replace the lid for five minutes until the cheese is melted and bubbling. Serve the steak and onion mixture on warm flour tortillas, topped with a dollop of avocado crema, fresh cilantro leaves, and a squeeze of fresh lime juice.Look for The cheese will melt into a creamy, smoky layer over the steak, creating a rich texture that complements the sweetness of the caramelized onions.Tip Heat the flour tortillas in a dry skillet for thirty seconds per side before serving to enhance their flavor and flexibility.
Once the cheese is added, it should melt into a golden, bubbling blanket over the steak and vegetables. The aroma will shift from purely smoky to a savory, cheesy fragrance. The final texture should be cohesive, with the steak easily separating with a fork. The dish is ready to be served immediately on warm tortillas with fresh, cold toppings for contrast.
Common mistakes
A common mistake is overcrowding the slow cooker, which can prevent the onions from caramelizing properly and lead to an excess of liquid that dilutes the sauce. Ensure you have enough space for the ingredients to settle.
Another error is neglecting to slice the steak against the grain, which can result in a tougher texture regardless of the cooking time. Finally, do not skip the resting period, as this allows the meat to reabsorb some of its juices, ensuring every bite remains moist and flavorful.
How to tell it’s done
The skirt steak is done when it is fork-tender and reaches an internal temperature of at least 145°F (63°C). The onions should be soft, translucent, and deeply caramelized, having absorbed the dark, smoky juices from the meat and the bourbon-brown sugar glaze.
When the cheese is added, it should be fully melted and bubbling slightly, indicating that the final flavor integration is complete and the dish is ready for assembly.
- Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest
Up next · Part 3 of 3
2 variations · storage & make-ahead · 3 answers · printable card
Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)