A slow cooker gives turkey breast a different finish from an oven: the meat stays tender, but the skin won’t turn crisp in the covered, moist heat. I keep that expectation in mind when I make this version, and let the seasoned butter and the turkey itself do the work. The onion, celery, and broth make a gentle bed beneath the breast instead of leaving it sitting directly on the bottom of the crock.
This is a straightforward way to cook a bone-in turkey breast without tying up the oven. The seasoned butter goes under the skin as well as over the outside, so the herbs and spices stay close to the meat while it cooks. I use a thermometer rather than relying on the clock alone; slow cookers can vary, and the thickest part is the place to check. The finished slices are savory, tender, and ready to carve after a short rest.
Kitchen Note
The butter should be soft enough to spread without tugging at the skin, but not melted. Melted butter slides off; softened butter carries the seasoning where you want it.
Save this Slow Cooker Turkey Breast for tender, herb-seasoned slices and an oven-free way to cook a bone-in breast.
Why the Turkey Sits on Vegetables Instead of Down in the Broth
The onion and celery aren’t just there for flavor. Arranged across the bottom of the slow cooker, they create a raised bed for the turkey, keeping the breast above the pool of broth instead of letting it sit in liquid. That matters for the texture: this is a moist-heat cook, but the goal is still a turkey breast you can carve, not meat simmered in broth.
Thick onion slices and short celery pieces hold their shape better than a fine chop under a long cook. The broth stays at the bottom and adds moisture to the covered cooker, while the turkey cooks skin-side up above it. Use the 6-quart slow cooker so the specified breast has room to sit on that vegetable bed with the lid closed. The vegetables will soften as they cook, so think of them as the base for the turkey rather than crisp side vegetables.
What the Butter, Broth, and Bone-In Breast Each Bring
- Bone-in, skin-on turkey breast — Choose a fully thawed breast in the specified size range. The bone and skin are part of this cooking setup, and the loosened skin gives you room to spread the butter directly over the meat. A boneless or skinless cut won’t cook on the same schedule.
- Softened unsalted butter — Butter gives the seasoning a spreadable base and adds richness to the outside of the breast. Unsalted butter lets the measured kosher salt do its job without adding an unpredictable salty note. A firm stick straight from the refrigerator is harder to work under the skin.
- Low-sodium chicken broth — Low-sodium broth supplies the liquid beneath the vegetable bed while leaving room for the salt in the seasoned butter. A basic carton is fine here; a highly seasoned broth can make the finished cooking liquid taste saltier than intended.
- Onion, celery, and dried thyme — The thick-cut vegetables support the turkey and soften during cooking, while dried thyme blends easily into the butter mixture. Use the dried herb listed for this rub; fresh leaves have a different concentration and won’t behave like a direct swap in the same amount.
- Garlic powder, black pepper, and paprika — These pantry seasonings disperse evenly through the butter rather than leaving large pieces on the skin. Fresh garlic isn’t a direct replacement for garlic powder in this mixture because its moisture and texture are different.
How to Set Up the Breast for Even Slow-Cooker Cooking
Build the vegetable bed
Set the thick onion slices and celery pieces across the bottom of a 6-quart slow cooker, then pour the chicken broth over them. Spread the vegetables into a fairly even layer so the turkey has support from one side to the other. The broth belongs below the breast, not poured over the skin. This gives the turkey a steady base while it cooks covered.
Mix the seasoned butter
In a small bowl, stir together the softened butter, kosher salt, black pepper, garlic powder, dried thyme, and paprika. Work the seasonings through until the butter looks evenly speckled, with no concentrated pocket of salt or spice. If the butter is cold and stiff, it will be difficult to spread smoothly; if it has melted, it won’t stay in place as well.
Season beneath the skin
Blot the fully thawed turkey breast dry with paper towels before adding the butter. Gently loosen the skin and spread some of the seasoned butter underneath, then coat the outside with the rest. Take care as you loosen the skin so it doesn’t tear; an intact layer makes it easier to keep the butter between the skin and meat.
Cook, check, and rest
Set the turkey skin-side up on the vegetables and cover the slow cooker. Cook on LOW for 5 to 6 hours or HIGH for 3 to 4 hours, checking the thickest part with a thermometer and keeping the probe away from bone. The turkey is ready when that reading reaches 165°F; don’t use the clock alone as the final test. Transfer it to a cutting board and let it rest for 15 minutes before carving so the slices are easier to handle.
Small Seasoning Changes That Keep the Turkey’s Character
A paprika-free butter rub
Leave the paprika out of the seasoned butter and keep the other listed seasonings. The outside will have less of paprika’s earthy note and a paler color, while the butter still carries the thyme, garlic, salt, and pepper.
A garlic-free version
Omit the garlic powder from the butter mixture and use the remaining seasonings. The turkey will lose that familiar savory garlic note, but the thyme, paprika, and black pepper still season the breast without changing the slow-cooker setup.
Storage and Reheating
- Refrigerator: Refrigerate carved turkey in an airtight container within 2 hours and use it within 3 to 4 days. Slices firm up when chilled, so cut only what you need if you want larger portions to stay moist.
- Freezer: Freeze carved portions in airtight freezer-safe packaging for up to 3 months for best quality. Thaw in the refrigerator before reheating; the texture may be a little less juicy than freshly cooked turkey.
- Reheating: Reheat covered in the microwave or in a low oven, with a little of the cooking liquid if you have it, until the turkey reaches 165°F. Avoid heating uncovered for a long stretch, which dries the edges before the center warms through.
Questions That Come Up When Slow-Cooking Turkey Breast
Slow Cooker Turkey Breast
Ingredients
Equipment
Method
- Arrange the onion and celery in the bottom of a 6-quart slow cooker.
- Pour in the chicken broth.
- Mix the softened butter, salt, pepper, garlic powder, thyme, and paprika in a small bowl.
- Pat the turkey breast dry with paper towels.
- Gently loosen the skin.
- Spread the seasoned butter under the skin and over the outside of the breast.
- Set the turkey breast skin-side up on the vegetables and cover.
- Cook on LOW for 5 to 6 hours or HIGH for 3 to 4 hours, until a thermometer inserted into the thickest part without touching bone reads 165°F.
- Transfer the turkey to a cutting board.
- Rest for 15 minutes before carving.
