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Dinner · Part 2 of 3: Instructions

Slow Cooker Bayonne Ham and Tomato Chicken Step-by-step instructions

A top-down view of a black slow cooker on a speckled quartz countertop filled with chicken, ham, and tomatoes.
Prep
Cook
Total
Serves
4
Includes 5 min resting

Before you start

Before beginning, ensure all ingredients are measured and ready. Slice the onion into thin, uniform strips to ensure they soften at the same rate as the chicken. Check that the slow cooker is clean and placed on a flat, heat-resistant surface away from any water sources.

Ensure the chicken breasts are properly thawed if they were previously frozen, as cooking from frozen can lead to uneven temperatures and food safety concerns. Organize the workspace to allow for quick assembly once the slow cooker is ready to be loaded.

Ingredients at a glance (5)
  • 4 pieces chicken breasts
  • 4 oz Bayonne ham, sliced
  • 1 medium onion, sliced
  • 1 tsp mild chili powder
  • 15 oz crushed tomatoes

Instructions

Initial Assembly

  1. Layering the ingredients
    Place the raw chicken breasts at the bottom of the slow cooker. Arrange the sliced Bayonne ham and onions evenly over the chicken to ensure even flavor distribution during the slow cooking process.
    Look for Ensure the chicken is in a single layer at the base.
    Tip Removing excess fat from the chicken breasts before adding them can improve the final sauce texture.

At the end of this phase, the chicken should be neatly arranged at the bottom with the ham and onions distributed evenly on top. The slow cooker is now prepared for the seasoning step.

Ensure no ingredients are spilling over the sides of the inner pot to keep the exterior clean during the cooking process and to prevent any burnt residue from affecting the final flavor.

Seasoning and Simmering

  1. Seasoning and simmering
    Sprinkle the mild chili powder over the ham and onion layer. Pour the crushed tomatoes over the top, covering the ingredients completely. Cover the slow cooker and cook on low for 4 hours until the chicken is tender and cooked through.
    Look for The tomatoes should be bubbling gently around the edges.
    Safe temperature 165°F (74°C) internal temperature (poultry)
    Tip Avoid lifting the lid unnecessarily to maintain consistent cooking temperatures inside the slow cooker.

The dish should smell aromatic as the chili powder begins to bloom in the tomato base. The internal temperature will be rising steadily. Check that the lid is tightly sealed to trap the moisture, which is essential for preventing the chicken from drying out. The tomatoes should start to release their juices, creating a flavorful braising liquid for the meat.

Final Resting

  1. Final resting and serving
    Check that the internal temperature of the chicken has reached 165°F (74°C). Once cooked, turn off the slow cooker and allow the dish to rest for 5 minutes before serving on a warm plate.
    Look for The sauce should be glossy and thickened slightly.
    Safe temperature 165°F (74°C) internal temperature (poultry)
    Tip Letting the chicken rest ensures the juices redistribute for a more succulent result.

The chicken should be fully cooked, tender, and easily pierced with a fork. The sauce will have thickened slightly and appear glossy. Confirm the temperature of 165°F (74°C) before turning off the power. The resting period is crucial here; the dish should look cohesive and smell savory, with the ham and onions fully integrated into the tomato-based sauce.

Common mistakes

Avoid overcrowding the slow cooker, as this can prevent the chicken from cooking evenly. Do not skip the resting period, as this allows the meat fibers to relax and retain moisture.

Another common mistake is using a high heat setting; the slow cooker is designed for low, steady temperatures, and using high heat can cause the chicken to become tough and rubbery. Finally, ensure the tomatoes are fully incorporated into the liquid base to prevent any dry patches during the long cooking time.

How to tell it’s done

The chicken is considered done when it is opaque throughout and reaches an internal temperature of 165°F (74°C). The texture should be fork-tender and easily pull apart. The sauce should appear glossy and slightly thickened, with the tomatoes having broken down into a rich consistency.

If the chicken is not quite ready, continue cooking in 15-minute increments and re-check the temperature. Always use a reliable digital meat thermometer inserted into the thickest part of the breast to ensure accuracy and safety.

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

Coming up in Part 3: common questions

  • Can this recipe be made ahead of time?
  • Is it possible to use chicken thighs instead of breasts?
  • Why is the resting time important?

Also in Part 3: variations (Mediterranean Style, Spicy Tomato Chicken), 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)