On this page

How Long to Slow Cook Chicken Breast (Time & Temp Chart)

Cooking Guide

Exact slow cooker times and settings for juicy chicken breast every time. Covers Low and High settings, fresh and frozen, plus tips from 50+ tested recipes.

Quick Answer

Quick Answer

Slow cook boneless chicken breast on Low (~190°F / 88°C) for 4–5 hours, or on High (~300°F / 149°C) for 2–3 hours, until the internal temperature reaches 165°F / 74°C. Thinner breasts need 3–4 hours on Low; frozen breasts need 6–8 hours on Low.

Time & Temperature Chart

All times assume standard chicken breast. Star (☆) marks our recommended setting.

Temperature Thickness Time Result
Low (~190°F / 88°C) ¾ inch / 2 cm 3–4 hours Gentle cook, very juicy
Low (~190°F / 88°C) 1 inch / 2.5 cm 4–5 hours ★ Most forgiving, tender throughout
Low (~190°F / 88°C) Frozen 6–8 hours Hands-off, thaw-and-cook
High (~300°F / 149°C) ¾ inch / 2 cm 1.5–2 hours Faster, slightly less juicy
High (~300°F / 149°C) 1 inch / 2.5 cm 2–3 hours Good balance of speed and tenderness
High (~300°F / 149°C) Frozen 4–5 hours Quickest from-frozen option

Always verify with a meat thermometer. Safe internal temperature: 165°F / 74°C.

Keep cooking notes with your recipes

Save times, temps, and prep notes where you'll find them.

Other Cooking Methods

Not set on slow cooking? Here are the other ways to cook chicken breast.

Baked Chicken Breast

20–25 min at 400°F / 200°C
Grilled Chicken Breast

6–8 min per side over medium-high heat
Air Fryer Chicken Breast

12–15 min at 400°F / 200°C, flip halfway
Pan-Seared Chicken Breast

5–7 min per side over medium heat

Tips for Juicy Slow Cooker Chicken

  1. 1

    Use a meat thermometer

    Pull chicken at 160°F / 71°C — carryover heat brings it to the safe 165°F / 74°C during resting. Slow cookers hold heat longer than other methods, so checking at the minimum time prevents the gradual overcooking that makes slow-cooked breast meat chalky.

  2. 2

    Don't lift the lid

    Every time you lift the lid, the slow cooker loses 15–20 minutes of heat. Slow cookers rely on trapped steam to maintain temperature — opening the lid resets this cycle. Check once near the end of cooking, not throughout.

  3. 3

    Skip the extra liquid

    Chicken breast releases enough moisture on its own. Adding broth or water dilutes flavour and causes the meat to boil rather than gently cook. Our top-rated slow cooker recipe (Fifteen Spatulas) uses no liquid at all — just seasoned chicken in a dry slow cooker.

  4. 4

    Use Low instead of High

    Low produces noticeably juicier results. The gentler heat gives proteins more time to break down without squeezing out moisture. High is fine when you're short on time, but if you can plan ahead, Low is always worth the wait.

  5. 5

    Rest before slicing

    Let slow-cooked chicken breast rest for 5–10 minutes before cutting or shredding. Despite the long cook time, slicing immediately still releases juices. Resting lets moisture redistribute so every slice is uniformly juicy.

Frequently Asked Questions

Can I slow cook chicken breast from frozen?
Yes, but it takes roughly 50% longer. Cook frozen chicken breast on Low for 6–8 hours or High for 4–5 hours. Add ½ cup of liquid (broth or water) when cooking from frozen — unlike fresh chicken, frozen breasts don't release moisture quickly enough in the early stages. Always verify with a thermometer that the thickest part reaches 165°F / 74°C. For food safety, the slow cooker should be on Low or High from the start — never Warm.
Should I add liquid to the slow cooker?
For fresh chicken breast, no. Chicken releases its own moisture during cooking, and adding liquid causes it to boil rather than gently braise — which makes the texture stringy rather than tender. Our highest-rated slow cooker recipe uses no added liquid at all. The exception is frozen chicken (add ½ cup broth) or if you're making a sauce-based dish where the liquid is part of the recipe.
Why is my slow cooker chicken breast dry?
The most common cause is overcooking. Chicken breast doesn't benefit from the long cooks that work for tougher cuts like pork shoulder. On Low, 4–5 hours is the sweet spot for thick breasts — beyond 6 hours, the meat dries out even on Low. Other factors: too much liquid (dilutes and boils), cooking on High when you have time for Low, and not letting it rest before slicing.
Is it safe to leave the slow cooker on all day?
Yes, slow cookers are designed for unattended cooking. Modern slow cookers maintain temperatures between 190–300°F / 88–149°C, well above the 140°F / 60°C danger zone for bacteria. However, for chicken breast specifically, don't leave it on Low for more than 6 hours (thick) or 5 hours (thin) — food safety isn't the concern, but quality drops significantly as the lean meat overcooks.

Share this page

Keep cooking notes with your recipes

Save times, temps, and prep notes where you'll find them.