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Dinner · Part 2 of 3: Instructions

Easy Crockpot Mexican Shredded Chicken Step-by-step instructions

A top-down view of a black slow cooker filled with raw chicken breasts, diced white onions, and tomatoes.
Prep
Cook
Total
Serves
6
Includes 5 min resting

Before you start

Before beginning, ensure the slow cooker is placed on a level, heat-resistant surface with easy access to a power outlet. Have all ingredients measured and prepared, ensuring the onions are diced to a consistent size for even cooking.

Clean the work surface and prepare the necessary tools, including a sharp knife and two sturdy forks for the shredding process. Being organized before starting the slow cooker prevents unnecessary rushing and ensures a smooth cooking process from start to finish.

Ingredients at a glance (4)
  • 2 lb boneless skinless chicken breasts
  • 1 cup diced white onion
  • 1 packet taco seasoning
  • 1 cup diced tomatoes

Instructions

Layering the ingredients

  1. Assemble ingredients
    Place the raw chicken breasts into the base of the slow cooker. Scatter the diced white onion evenly over the chicken. Sprinkle the taco seasoning across the top to ensure even coverage, and pour the diced tomatoes over the entire mixture.
    Look for All ingredients are layered neatly in the slow cooker with the liquid from the tomatoes beginning to pool at the bottom.
    Tip Ensure the chicken is laid out in a single layer if possible for more even cooking throughout the process.

At this stage, the slow cooker contains the raw chicken topped with onions, seasoning, and tomatoes. Ensure the chicken is positioned flat and the seasoning is evenly distributed to prevent pockets of bland or overly salty meat.

The ingredients should look neatly layered, with the tomato liquid starting to settle around the chicken breasts, signaling that the braising process is ready to begin.

Slow cooking phase

  1. Slow cook the chicken
    Cover the slow cooker with its lid and set to low heat. Cook for approximately four hours. Monitor the process to ensure the chicken remains moist and the vegetables soften completely into a savory sauce.
    Look for The chicken appears opaque and the onions have become translucent and soft, releasing their juices into the seasoning.
    Safe temperature 165°F (74°C) internal temperature (poultry)
    Tip Avoid lifting the lid frequently, as this allows heat to escape and increases the total cooking time significantly.

During the four-hour cooking window, the kitchen should begin to smell of warm spices and savory onions. The chicken will gradually transition from raw to fully cooked as it absorbs the moisture and flavors from the tomatoes and seasoning. Check periodically through the glass lid to ensure the liquid is simmering gently, but avoid opening the lid, which would release essential steam and heat.

Shredding and final assembly

  1. Shred and finish
    Once the chicken reaches an internal temperature of 165°F (74°C), remove it from the slow cooker and transfer to a plate. Use two forks to shred the meat into bite-sized pieces. Return the shredded chicken to the slow cooker and toss with the juices to coat thoroughly before serving.
    Look for The chicken pulls apart easily with minimal pressure from two forks, and the sauce has thickened slightly from the tomato juices.
    Safe temperature 165°F (74°C) internal temperature (poultry)
    Tip Let the shredded meat sit in the sauce for a few minutes before serving to allow the flavors to penetrate the fibers.

Once the cooking time is complete, the chicken should be soft and easy to pull apart. Shredding the meat on a plate allows for easier handling and ensures that the texture is consistent. After returning the meat to the slow cooker, toss it thoroughly until every piece is coated in the thickened sauce. The final result is a uniform, flavorful mixture ready for serving.

Common mistakes

Avoid overcooking the chicken, as even in a slow cooker, it can become dry if left for too long beyond the recommended four hours. Another common error is failing to trim the chicken properly, which can leave unwanted textures in the final dish.

Finally, do not add too much extra liquid beyond the tomatoes, as this will dilute the seasoning and result in a watery sauce rather than a flavorful, concentrated coating for the shredded meat.

How to tell it’s done

The chicken is fully cooked when it reaches an internal temperature of 165°F (74°C) measured at the thickest part of the breast. Visually, the meat should be completely opaque throughout with no signs of pink.

When tested with a fork, the fibers should separate easily with very little resistance, indicating that the connective tissues have broken down sufficiently for a tender, succulent texture that absorbs the surrounding sauce perfectly.

  • Poultry: 165°F (74°C) in the thickest part

Coming up in Part 3: common questions

  • Can this recipe be made ahead of time?
  • What is the best way to shred the chicken?
  • Is it possible to use frozen chicken breasts?

Also in Part 3: variations (Spicy Version, Vegetable-Rich Version), storage and make-ahead, and the printable recipe card.

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)