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Dinner · Part 2 of 3: Instructions

Slow Cooker Glazed Pork Belly for Tender Results Step-by-step instructions

A close-up of tender, glazed pork belly with caramelized onions served in a black slow cooker.
Prep
Cook
Total
Serves
4
Includes 10 min resting

Before you start

Before beginning, ensure the pork belly is properly trimmed and cut into uniform chunks to promote even cooking. Have all ingredients measured and ready to go. The slow cooker insert should be clean and dry.

Ensure you have a reliable meat thermometer on hand to verify the internal temperature of the pork, as this is the only way to guarantee that the meat has reached the safe temperature required for consumption.

Ingredients at a glance (2)
  • 2 lb pork belly, skin removed and cut into large chunks
  • 2 large yellow onions, sliced into thick rounds

Instructions

Assembly and Seasoning

  1. Prepare the base
    Slice the yellow onions into thick rounds and arrange them in an even layer at the bottom of the slow cooker to create a rack for the pork.
    Look for The onions should cover the entire bottom surface of the slow cooker insert.
    Tip Using thick slices prevents the onions from turning into mush during the long cooking process.
  2. Season the pork
    Place the pork belly chunks on top of the onion bed.
    Look for The pork should be arranged in a single layer.
    Tip Ensure the pork is cut into uniform pieces to allow for even cooking throughout the slow cooker.

At the end of this phase, the slow cooker should be set up with a base of onions and the pork belly arranged in a single layer. The smell should be fresh and aromatic, with the sharpness of the raw onions being the most prominent scent. Ensure the pork is positioned securely on top of the onion bed before starting the cooker.

Slow Cooking

  1. Slow cook the meat
    Cover and cook on low for 6 hours or on high for 3 to 4 hours until the internal temperature reaches 145°F (63°C). Let the meat rest at least 3 minutes before serving.
    Look for The meat should be incredibly tender and easily pierced with a fork.
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip Do not lift the lid frequently as this releases essential heat and moisture, which may increase the necessary cooking time.

The pork is ready to progress when it has become fork-tender and reached the required internal temperature. The kitchen should smell rich and savory, with the scent of caramelized onions filling the air. The liquid in the bottom of the cooker will have mixed with the rendered fat from the pork to create a luxurious, glossy sauce.

Resting and Serving

  1. Rest and serve
    Once cooked, carefully remove the pork belly pieces and let them rest on a cutting board for at least 3 minutes before slicing and serving over the caramelized onions.
    Look for The pork should have a glossy, caramelized coating and a soft, yielding texture.
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip Use a sharp knife to slice the pork belly to maintain the integrity of the delicate, tender meat layers.

After the resting period, the pork should be firm enough to slice neatly but soft enough to yield immediately under the knife. The surface should have a deep, mahogany sheen.

Before serving, verify that the meat is still hot and that the onions at the bottom are soft and fully caramelized, adding a sweet, savory depth to the final dish.

Common mistakes

The most common mistake is failing to let the meat rest after cooking. Resting for at least 3 minutes is non-negotiable, as it allows the juices to redistribute and the texture to stabilize, ensuring the best possible mouthfeel.

Another error is over-crowding the slow cooker, which prevents the heat from circulating effectively and can lead to uneven cooking. Finally, avoid lifting the lid during the cooking process to maintain a consistent temperature.

How to tell it’s done

The pork belly is done when it reaches an internal temperature of 145°F (63°C). Visually, the meat should be deeply colored and appear incredibly soft.

When you press a fork into the center of a piece, it should offer almost no resistance, indicating that the collagen has fully broken down. The fat should be translucent and jelly-like rather than firm, and the meat should be easily pulled apart with minimal effort.

  • Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest

Coming up in Part 3: common questions

  • Can the pork belly be cooked on high instead of low?
  • Is it necessary to remove the skin from the pork belly?
  • Why is the pork belly still tough after the cooking time?

Also in Part 3: variations (Spicy Pork Belly, Ginger-Infused Pork Belly), 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)