How to Clean a Slow Cooker / Crockpot: Remove Stubborn Stains and Odors

Slow cookers are beloved for their set-it-and-forget-it convenience — but hours of low-heat cooking can bake food residue onto the ceramic insert, making cleanup feel like a chore. With the right approach, even the most stubborn slow cooker stains come off easily.

How Often Should You Clean Your Slow Cooker?

• Ceramic insert and lid: After every use.
• Exterior and heating base: Weekly, or when you notice spills.

What You'll Need

• Dish soap
• Non-scratch scrub sponge
• Microfiber cloths
• Baking soda
• White vinegar
• Spray bottle

Step 1: Let It Cool First

Never plunge a hot ceramic insert into cold water — thermal shock can crack it. Let the slow cooker cool completely before cleaning, ideally 30-60 minutes after cooking.

Step 2: Clean the Ceramic Insert

For Light Residue (Regular Clean)

1. Fill the insert with warm soapy water and let soak for 15-20 minutes.
2. Scrub with a non-scratch sponge.
3. Rinse thoroughly and dry.

For Stubborn Baked-On Food

1. Fill the insert with warm water and add 2-3 tablespoons of baking soda.
2. Let soak overnight (or at least 2-3 hours).
3. The baking soda softens even the most stubborn baked-on residue — it should wipe away easily after soaking.
4. Scrub with a non-scratch sponge and rinse clean.

For Stains and Discoloration

1. Make a paste with baking soda and a little water.
2. Apply to stained areas and let sit for 30 minutes.
3. Scrub and rinse. For persistent stains, spray with white vinegar after applying the paste — the fizzing action helps lift discoloration.

Step 3: Clean the Lid

1. Wash the glass lid with warm soapy water and a non-scratch sponge.
2. For mineral deposits or cloudiness, soak in equal parts white vinegar and water for 15 minutes, then wipe clean with a microfiber cloth.
3. Dry thoroughly — water spots on glass lids are common but easy to prevent.

Step 4: Clean the Heating Base

1. Unplug the slow cooker.
2. Wipe the interior of the heating base with a damp microfiber cloth.
3. For food spills inside the base, use a damp cloth with a little dish soap. Wring out well — no water should drip into the electrical components.
4. Never submerge the heating base in water.
5. Wipe the exterior with a damp cloth and dry.

Can You Put the Ceramic Insert in the Dishwasher?

Most slow cooker ceramic inserts are dishwasher-safe — check your manual to confirm. Place on the bottom rack. The glass lid is usually dishwasher-safe too (top rack). The heating base is never dishwasher-safe.

Removing Slow Cooker Odors

If your slow cooker retains strong food odors (garlic, fish, curry):

1. Fill the insert with water and add ½ cup of white vinegar.
2. Run on low for 1 hour.
3. Discard, wash normally, and air dry with the lid off.

Frequently Asked Questions

How do I remove burnt food from a slow cooker?

Fill with warm water and baking soda and soak overnight. The baking soda softens even heavily burnt residue. Avoid abrasive scrubbers that can scratch the ceramic.

Can I use bleach to clean my slow cooker insert?

Avoid bleach — it can damage the ceramic glaze and leave residue. Baking soda and vinegar are safer and equally effective.

Why does my slow cooker smell even after washing?

Strong-smelling foods like garlic, fish, or curry can penetrate the ceramic. Run the vinegar water cycle described above, or leave an open box of baking soda inside the insert overnight to absorb odors.

How do I prevent food from sticking to the slow cooker?

Spray the insert with cooking spray before adding ingredients, or use slow cooker liner bags for easy cleanup. Adding a little liquid to recipes also helps prevent sticking.