Slow cooker is the easiest way to cook turkey breast, and this method produces the softest, moistest and juiciest turkey! You can use both bone-in and boneless turkey breast with this recipe. Just rub the turkey breast with spices, put in the crockpot along with chopped onion and cook to perfection!
If the turkey breast is labeled as "brined" or "oven-ready", omit the salt.
Rub the turkey breast with salt, pepper, garlic and Italian herbs seasoning all over.
Put the chopped onions on the bottom of the slow cooker.
Put the turkey breast on top of the onion.
Cook the turkey breast for 3.5 hours on High or 7 hours on Low, or until the meat thermometer inserted in the thickest part of the turkey breast registers 165 degrees.