Slow Cooker Turkey Breast

Name: Slow Cooker Turkey Breast
Prep time: 15 min
Cook time: 300 min
Total time: 330 min
Ingredients: 1 yellow onion (medium, quartered); 1 cup low-sodium chicken broth; 4 tbsp unsalted butter (softened); 1 tsp dried thyme; 1 tsp paprika; 1 tsp garlic powder; 1.5 tsp kosher salt; 0.5 tsp black pepper; 1 turkey breast (4- to 5-pound, bone-in, skin-on, fully thawed)

When the slow cooker lid comes off, the turkey is tender and the skin is soft, not roast-crisp. That’s the tradeoff with this method, and it’s why I like it…

By Willow • October 14, 2026 • Reading time: 8 min

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Tip: save now, cook later.

When the slow cooker lid comes off, the turkey is tender and the skin is soft, not roast-crisp. That’s the tradeoff with this method, and it’s why I like it when I want a turkey breast that can cook gently while I get on with the rest of dinner. This Slow Cooker Turkey Breast has a simple butter-and-spice rub, and the onion and chicken broth underneath collect the drippings as it cooks.

Spreading the seasoned butter under the loosened skin gives the meat flavor right where it needs it, instead of leaving all the seasoning on the outside. Patting the turkey dry first also makes the butter easier to spread without sliding around. I use a fully thawed, bone-in breast and let a thermometer—not the clock alone—tell me when it’s ready. After a short rest, the slices are tender and easy to carve.

Slow Cooker Turkey Breast tender juicy slices

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Kitchen Note

Start with a fully thawed turkey breast; a frozen center makes slow-cooker timing unreliable. If it’s still icy, thaw it in the refrigerator before cooking.

Save this Slow Cooker Turkey Breast for tender slices seasoned under the skin, with a hands-off cook in the slow cooker.

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Why Slow-Cooker Turkey Skin Won’t Turn Roast-Crisp

A slow cooker surrounds the turkey with moist heat, so the skin won’t brown and crisp the way it does in an oven. The butter on the outside seasons the skin, but it can’t replace the dry, exposed heat that creates a crisp roast-turkey finish. Expect soft skin and tender meat rather than a crisp top.

That doesn’t mean the skin-on breast is a poor fit here. It stays in place as the turkey cooks, and the seasoned butter tucked underneath gives the meat flavor as well as seasoning the outside. The onion raises the breast slightly above the broth, while the liquid and turkey drippings gather at the bottom. If crisp skin is the part you’re after, choose an oven-roasted method; this slow-cooker version is about gentle cooking and a tender carve.

What the Butter, Broth, and Bone-In Breast Each Bring

Bone-in, skin-on turkey breast — The bone and skin are part of the way this cut cooks in the slow cooker. Choose a fully thawed breast in the stated size range so the timing and cooker fit stay close to the tested method.
Unsalted butter — Softened butter carries the dried herbs and spices and spreads beneath the skin. Unsalted butter lets the measured kosher salt do the seasoning; if you need a dairy-free version, use softened dairy-free butter as described below.
Chicken broth and yellow onion — The broth provides the liquid in the cooker, and the quartered onion makes a bed for the turkey. Low-sodium broth leaves more room for the rub’s salt without making the cooking liquid overly salty.
Thyme, paprika, and garlic powder — These dry seasonings mix evenly into the butter and cling to the turkey. Dried thyme and garlic powder are convenient here; paprika gives the rub its color and a mild warmth.
Kosher salt and black pepper — These season the turkey directly through the butter rub. Use kosher salt as measured, since different salt types can vary in how much they season by volume.

How to Season the Breast and Cook It Without Guesswork

Make an Onion Bed in the Slow Cooker

Arrange the quartered onion across the bottom of a 6-quart slow cooker, then pour in the low-sodium chicken broth. Spread the onion out so the turkey can sit on top rather than resting directly on the bottom of the cooker. The broth should stay beneath the breast; it isn’t meant to cover the turkey.

Mix the Seasoned Butter

Stir the softened butter with the thyme, paprika, garlic powder, kosher salt, and black pepper in a small bowl. Keep stirring until the seasonings are distributed throughout the butter rather than sitting in a clump at the bottom. A smooth, spreadable mixture is easier to work under the skin than cold, firm butter.

Work the Rub Under the Skin

Pat the turkey breast dry, then gently loosen the skin without tearing it. Spread the seasoned butter underneath the skin and over the outside, distributing it as evenly as you can across the breast. Set the turkey skin-side up on the onion; if the skin tears, press it back into place rather than pulling it farther.

Cook to Temperature, Then Rest

Cover the slow cooker and cook on LOW for 5 to 6 hours or HIGH for 3 to 4 hours. Check the thickest part of the breast with a thermometer, keeping the probe from touching bone; it’s ready when it reads 165°F. Transfer the turkey to a cutting board, tent it loosely with foil, and rest for 15 minutes before carving. The rest gives the meat time to settle before you slice it.

Three Useful Ways to Adapt This Slow-Cooker Turkey

Make the Rub Dairy-Free

Replace the unsalted butter with the same amount of softened dairy-free butter. Choose a stick-style product that softens and spreads; the seasoning method stays the same, though the rub may have a slightly different buttery taste.

Give the Rub a Smokier Note

Swap smoked paprika for the paprika in the rub, using the same amount. It adds a more pronounced smoky aroma without changing the butter-based method.

Trade Thyme for Rosemary

Use dried rosemary in place of the dried thyme, keeping the same amount. Rosemary gives the butter a more piney, assertive herb flavor, so the finished turkey tastes less gently herbal.

Storage and Reheating

Refrigerator: Refrigerate leftovers within 2 hours and keep them for 3 to 4 days. The meat will firm up when chilled.
Freezer: Freeze sliced turkey in airtight portions for up to 4 months for best quality. Thaw it in the refrigerator before reheating.
Reheating: Warm slices covered with a little cooking liquid in the microwave or in a covered skillet, until they reach 165°F. Uncovered reheating can dry the lean breast out.

Questions I Get About Slow-Cooker Turkey Breast

Can I use a boneless turkey breast?+

This method is sized and timed for a 4- to 5-pound bone-in, skin-on breast. A boneless breast has a different shape and cooks differently, so I wouldn’t use the same timing and assume it will turn out the same.

How do I make the seasoned butter ahead?+

Stir the butter and seasonings together, cover the bowl, and refrigerate it until you’re ready to prepare the turkey. Let it soften until spreadable before working it under the skin; cold butter is difficult to distribute without tugging at the skin.

Can I use the slow-cooker liquid as gravy?+

The liquid will be a seasoned broth with turkey drippings, not a thick gravy. You can spoon a little over the carved meat to keep the slices moist, or use it as a base if you’re making a separate gravy.

How do I adjust this for a larger turkey breast?+

I’d stay with a 4- to 5-pound breast for this batch of seasoning and the 6-quart slow cooker. A larger breast may not fit properly and would need its own timing, so don’t rely on the listed cook time for a bigger cut.