How to Cook Costco Pork Belly Perfectly

Costco carries three types of pork belly in their meat section. Swift whole pork belly runs around 8-10 pounds per package. Kirkland Signature offers pre-sliced boneless pork belly at roughly 5.5 pounds. There’s also a sous vide version that comes precooked with hickory flavor in 2-pound packages.

Most shoppers grab the sliced variety because it saves time. You don’t need to portion anything yourself.

The whole slab works better for making homemade bacon or slow-roasted crackling. Both raw options are vacuum sealed and sold refrigerated, not frozen.

This guide covers three cooking methods with different time requirements. The oven takes the longest at 1.5 to 2.5 hours total. Air fryer cuts that down to 35-45 minutes. Pan-frying slices only needs about 15-20 minutes.

Each method produces a different result, so pick based on what texture you want.

Product Details

Product: Kirkland Signature Sliced Boneless Pork Belly / Swift Whole Pork Belly

Type: Raw, refrigerated (not frozen)

Package Size: Sliced: 5-6 lbs (8-10 servings) | Whole: 8-10 lbs (16-20 servings)

Price: $3.49-4.49 per pound at Costco (Updated January 2025)

Storage: Refrigerate at 40F or below. Use within 3-5 days or freeze.

Calories per Serving: 585 calories per 4 oz (113g) serving

Main Ingredients: Pork belly (single ingredient for raw versions)

Item Number: Varies by location. Sliced belly often listed as #10580.

Cooking Methods Comparison

Recommended Method: Oven roasting for the best balance of tender meat and crackling skin on larger pieces. Air fryer wins for speed and crispy pork belly bites.

Method 1: Oven Roasting (Recommended for Whole Belly)

Slow roasted pork belly in the oven produces restaurant-quality results. Total time runs about 1.5 to 2.5 hours depending on thickness. You’ll get tender meat that practically melts and skin that cracks when you bite it.

This works best for pieces weighing 2-5 pounds.

Step 1: How Do You Prepare the Pork Belly?

Pat the meat completely dry with paper towels. Moisture is the enemy of crispy skin.

Instructions:

1. Remove pork belly from packaging and pat dry on all sides
2. Score the skin in a crosshatch pattern, cutting about 1/4 inch deep into the fat layer (don’t cut into the meat)
3. Rub kosher salt generously over the skin and into the score marks
4. Optional: Let it sit uncovered in the fridge overnight for extra crispy results

Equipment: Sharp knife, paper towels, rimmed baking sheet, wire cooling rack

Step 2: What Temperature and Time Do You Use?

Two-stage cooking is the key here. High heat first to start the crackling, then low and slow to break down the connective tissue.

Instructions:

1. Preheat oven to 450F
2. Place pork belly skin-side up on a rack set over a roasting pan
3. Roast at 450F for 30 minutes
4. Reduce temperature to 275F and continue cooking for 1-1.5 hours

Temperature: 450F initial, then 275F

Time: 30 minutes + 60-90 minutes (varies by thickness)

Step 3: When Do You Check the Pork Belly?

After the initial 30-minute blast, the skin should start blistering. Keep an eye on it during the low-temp phase.

Instructions:

1. Check at the 30-minute mark when reducing temperature
2. If skin is browning unevenly, rotate the pan
3. Baste meat portion with rendered pork fat at the 1-hour mark

Checkpoint: At 30 minutes and again at 60 minutes

Step 4: How Do You Know When It’s Done?

The meat should be fork-tender and the skin should crackle when tapped.

Instructions:

1. Insert meat thermometer into thickest part of the meat (not touching fat)
2. Look for internal temperature of 195-205F for tender, fall-apart meat
3. Skin should be golden brown and bubbly
4. Rest for 10-15 minutes before slicing

Target Temperature: 195-205F internal for tender meat. 145F minimum for food safety.

Visual Indicator: Bubbly, crackling skin that sounds hollow when tapped. Meat should pull apart easily with a fork.

Method 2: Air Fryer

Air fryer pork belly cooks faster and produces incredibly crispy results. This method works best for sliced pork belly or pieces cut into 1-inch chunks for burnt ends style bites.

Total cook time runs 35-45 minutes for a slab or 15-20 minutes for smaller pieces.

Step 1: How Do You Prepare the Pork Belly?

Cut the belly into manageable pieces that fit your air fryer basket.

Instructions:

1. Pat pork belly completely dry with paper towels
2. For whole pieces: score the skin and create a foil boat around the sides
3. For bites: cut into 1-inch cubes
4. Season with salt, pepper, garlic powder, and smoked paprika

Equipment: Air fryer, sharp knife, paper towels, small bowl for seasoning

Step 2: What Temperature and Time Do You Use?

Two-stage cooking works here too. Start lower to render fat, then crank up the heat for crispiness.

Instructions:

1. Preheat air fryer to 320F
2. Cook for 25-30 minutes at 320F
3. Increase temperature to 400F
4. Cook additional 10-15 minutes until skin is crispy and puffed

Temperature: 320F initial, then 400F

Time: 25-30 minutes + 10-15 minutes (for slab). 15-20 minutes total at 400F for cubed bites.

Step 3: When Do You Flip or Check?

Air fryers need occasional attention to ensure even cooking.

Instructions:

1. For cubed pieces: shake basket or flip at 7-8 minute mark
2. For slab: check skin at 20-minute mark during high-heat phase
3. Cover any areas browning too fast with small pieces of foil

Checkpoint: Every 7-8 minutes for bites. At 20-minute mark for larger pieces.

Step 4: How Do You Know When It’s Done?

The exterior should be deeply golden and the skin should crackle.

Instructions:

1. Check that skin is puffed and golden brown
2. Internal temperature should read at least 145F (195F+ for tender texture)
3. Edges should show slight charring
4. Rest for 5-10 minutes before slicing

Target Temperature: 145F minimum. 195-200F for maximum tenderness.

Visual Indicator: Puffed, bubbly skin with golden-brown color. Fat should be rendered and slightly translucent.

Method 3: Stovetop Pan-Frying

Pan-fried pork belly slices cook the fastest. This method works great for Korean BBQ style preparations or when you want caramelized pork belly strips.

Total time is about 15-20 minutes from start to finish.

Step 1: How Do You Prepare the Pork Belly?

Use pre-sliced belly from Costco or cut your own slices about 1/4 to 1/2 inch thick.

Instructions:

1. If using whole belly, slice into strips 1/4 to 1/2 inch thick
2. Pat slices completely dry
3. Season with salt and pepper (or your preferred dry rub)
4. Optional: marinate in soy sauce, garlic, and ginger for 20 minutes

Equipment: Cast iron skillet or heavy pan, tongs, splatter screen

Step 2: What Temperature and Time Do You Use?

Medium heat gives the fat time to render without burning the exterior.

Instructions:

1. Heat a dry skillet over medium heat (no oil needed)
2. Place slices in pan without overcrowding
3. Cook 4-5 minutes on first side
4. Flip and cook another 4-5 minutes

Temperature: Medium heat (setting 5 out of 10)

Time: 8-10 minutes total for thin slices. 15-20 minutes for thicker cuts.

Step 3: When Do You Flip?

Let the slices develop good color before turning.

Instructions:

1. Flip when undersides are golden brown (4-5 minutes)
2. If skin is attached, stand slices on edge to crisp the skin for 2-3 minutes
3. Drain excess rendered fat as needed to prevent splatter

Checkpoint: At 4-5 minute mark for first flip

Step 4: How Do You Know When It’s Done?

Slices should be caramelized and slightly crispy on the edges.

Instructions:

1. Both sides should be golden brown with crispy edges
2. Fat layer should be rendered and slightly translucent
3. Meat should be cooked through with no pink remaining
4. Rest on paper towels for 2 minutes to drain excess fat

Target Temperature: 145F minimum internal temperature

Visual Indicator: Golden brown exterior, slightly charred edges, rendered fat

Safety and Quality Indicators

Food Safety:

• Internal Temperature: 145F minimum for whole cuts. 195-205F for fall-apart tender texture.
• Steam Check: Product should steam when cut open
• Thawing: Thaw frozen pork belly in refrigerator overnight, never at room temperature

Quality Indicators (Done Properly):

• Color: Golden brown exterior, rendered fat appears slightly translucent
• Texture: Crispy skin that crackles, tender meat that pulls apart easily
• Temperature: Hot throughout, steaming when sliced
• Appearance: Bubbly, puffed skin with even browning

Signs of Overcooking:

• Skin turns dark brown or black
• Meat becomes dry and stringy
• Fat renders completely, leaving meat tough

Serving Suggestions

Portion Size: 4-6 oz per serving (3-4 servings per pound)

Serving Ideas:

• Slice thin and serve over steamed jasmine rice with pickled vegetables
• Cut into cubes for pork belly burnt ends with BBQ glaze
• Add to ramen bowls as the protein topping
• Wrap in lettuce leaves Korean BBQ style with kimchi and ssamjang

Pairing Recommendations:

• Steamed rice, Costco fried rice, or noodles
• Braised bok choy or sauteed Asian greens
• Pickled daikon and carrots
• Hoisin sauce, sweet chili sauce, or Korean BBQ sauce for dipping

Storage and Reheating

Leftover Storage:

• Refrigerate within 2 hours of cooking
• Store in airtight container
• Consume within 3-4 days
• Freeze for up to 3 months (wrap tightly in foil then plastic)

Reheating Instructions:

• Air Fryer: 350F for 5-10 minutes until heated through and skin re-crisps
• Oven: 350F for 10-15 minutes
• Stovetop: Pan-fry slices over medium heat for 2-3 minutes per side
• Target Temperature: 165F for reheated leftovers

Troubleshooting Common Issues

Issue: Skin won’t crisp up

Cause: Too much moisture on the skin, or oven temperature too low

Solution: Pat skin completely dry before cooking. Score the skin deeper. Try the broiler for the final 5 minutes to blast the skin with high heat.

Issue: Meat is tough and chewy

Cause: Undercooked or cooked at too high temperature the entire time

Solution: Low and slow cooking breaks down connective tissue. Cook to internal temp of 195-205F for tender results. Extend cooking time at lower temperature.

Issue: Fat layer is still rubbery

Cause: Fat didn’t have enough time to render

Solution: Score the skin and fat layer more deeply. Extend the low-temperature cooking phase. Make sure the initial high-heat blast is long enough to start the rendering process.

Issue: Uneven browning

Cause: Pork belly not level in the pan, or hot spots in oven

Solution: Use a wire rack to elevate the pork. Rotate the pan halfway through cooking. Prop up thinner areas with foil balls to level the skin.

Product Variations and Related Items

Similar Costco Products:

• Kirkland Signature Bacon – Cured and sliced version of pork belly
• Costco pork – Other cuts including tenderloin and shoulder
• Costco ribs – Spare ribs come from the belly area after the belly is removed
• Costco carnitas – Pre-made pulled pork from shoulder

Cooking Time Adjustments:

• Sous vide version only needs 5-10 minutes to warm since it’s precooked
• Thicker whole belly (3+ inches) may need an extra 30-60 minutes at low temperature
• Sliced belly cooks faster than whole pieces across all methods

Which Method Should You Choose?

Choose Oven when:

• You want the crispiest crackling on skin-on belly
• Cooking for a crowd (4+ servings)
• You have 2+ hours available
• Making a centerpiece roast

Choose Air Fryer when:

• Speed matters (under 45 minutes)
• Making pork belly bites or burnt ends
• Cooking 2-4 servings
• You want crispy exterior without heating up the whole kitchen

Choose Stovetop when:

• You need dinner in 20 minutes or less
• Working with pre-sliced belly strips
• Making Korean or Asian-style preparations
• Cooking 1-2 servings

Time Comparison: Stovetop (15-20 min) < Air Fryer (35-45 min) < Oven (90-150 min)

Crispiness Ranking: Oven with broiler finish (crispiest skin) > Air Fryer (very crispy) > Stovetop (caramelized but denser)

FAQ on How To Cook Costco Pork Belly

What temperature should I cook Costco pork belly?

For oven roasting, start at 450F for 30 minutes, then reduce to 275F.

Air fryer works best at 320F initially, finishing at 400F for crispy skin.

Stovetop uses medium heat. No thermometer needed for pan-frying sliced belly strips.

How long does it take to cook pork belly in the oven?

Plan for 1.5 to 2.5 hours total depending on thickness.

A 2-pound piece needs about 90 minutes. Larger 5-pound slabs may take up to 3 hours at low temperature for tender meat.

How do I get crispy pork belly skin?

Dry the skin completely with paper towels. Score it in a crosshatch pattern about 1/4 inch deep.

Rub with kosher salt and let it sit uncovered in the fridge overnight. High heat at the end creates crackling.

Should I score the pork belly before cooking?

Yes. Scoring helps the fat render properly and allows seasonings to penetrate.

Use a sharp knife to cut through the skin and fat layer. Don’t cut into the meat itself.

Can I cook Costco pork belly from frozen?

Not recommended. Thaw in the refrigerator overnight for best results.

Frozen pork belly won’t cook evenly and the skin won’t crisp. The meat thermometer readings will be unreliable during cooking.

What is the best method for cooking pork belly?

Oven roasting produces the best crackling and tender meat for whole pieces.

Air fryer wins for speed and crispy pork belly bites. Pan-frying works great for thin sliced belly Korean BBQ style.

How do I know when pork belly is done?

Internal temperature should reach 145F minimum for safety. For fall-apart tender texture, cook to 195-205F.

The skin should be golden brown and bubbly. Meat should pull apart easily with a fork.

How do I store and reheat leftover pork belly?

Refrigerate in an airtight container within 2 hours. Keeps 3-4 days in the fridge.

Reheat in the air fryer at 350F for 5-10 minutes. This re-crisps the skin better than the microwave.

What should I serve with Costco pork belly?

Steamed jasmine rice or Costco udon noodles pair well. Add pickled vegetables and Asian greens.

Try it in ramen, tacos, or lettuce wraps. Hoisin sauce and sweet chili make good dipping options.

What is the difference between the three Costco pork belly options?

Swift whole belly runs 8-10 pounds at $3.99 per pound. Raw and unsliced.

Kirkland sliced belly comes at 5-6 pounds, pre-portioned. The sous vide version is precooked with hickory flavor in 2-pound packages.

Conclusion

Now you know how to cook Costco pork belly using three different methods. Each approach delivers something different.

Oven roasting gets you that crackling skin and rendered pork fat everyone loves. Air fryer makes quick work of pork belly burnt ends and crispy bites.

Pan-frying gives you caramelized slices in under 20 minutes.

The key is patience. Let the fat render slowly. Score the skin properly. And always check your internal temperature before serving.

Pick your method based on time and texture preference. You really can’t mess this up.