Dinner · Part 2 of 3: Instructions
Easy Slow-Cooker Turkey Breast with Savory Sage Gravy Step-by-step instructions

- Prep
- Cook
- Total
- Serves
- 6
Before you start
Before starting, ensure your slow cooker is clean and placed on a stable surface away from the edge of the counter. Gather all your ingredients, including the fresh herbs and bone broth, so that assembly is efficient. Have a digital meat thermometer ready to monitor the turkey's progress.
It is helpful to have a large cutting board and a sharp carving knife prepared for when the turkey is finished cooking, as this will make the transition to serving much smoother and safer once the meat reaches its target temperature.
Ingredients at a glance (6)
- 3 lb boneless skin-on turkey breast
- 4 tbsp herb butter
- 1 bunch fresh sage leaves
- 2 sprigs fresh rosemary
- 1 cup turkey bone broth
- 1 tbsp cornstarch
Instructions
Assembly and Preparation
- Prepare the Slow CookerPlace the turkey breast into the ceramic insert of the slow cooker. Add the herb butter, fresh sage leaves, rosemary sprigs, and pour the turkey bone broth over the meat to provide moisture for the cooking process.Look for The ingredients should be layered evenly in the slow cooker insert.Tip Ensure the skin side of the breast is facing up to help it stay moist during the long cooking time.
At this stage, the turkey is nestled in the slow cooker with the butter, broth, and herbs. Everything is ready to begin the gentle cooking process. Ensure the lid is seated properly to seal in the moisture. The kitchen should smell faintly of fresh herbs as you prepare to start the slow cooker. Double-check that all ingredients are accounted for before switching the device on, as the long cook time means you will not be checking on it again for several hours.
Slow Cooking Cycle
- Slow Cook the TurkeyCover the slow cooker with the lid. Set the device to low heat and cook for 5 hours. The turkey is ready when it is tender and reaches an internal temperature of 165°F (74°C) at its thickest part.Look for The turkey should be very tender and easily pierced with a fork.Safe temperature 165°F (74°C) internal temperature (poultry)Tip Avoid lifting the lid during the first 4 hours to maintain a steady internal temperature.
The turkey is now simmering in the slow cooker. You will notice the aroma of roasted herbs and turkey filling the kitchen as the hours pass. The meat should be slowly transforming into a succulent, tender state. There is no need to intervene during this phase; simply let the slow cooker do its work. By the end of the five hours, the turkey will have absorbed all the savory notes of the broth and herbs, becoming exceptionally soft and ready for the final step.
Gravy Finishing and Serving
- Prepare the Gravy and ServeCarefully remove the turkey breast to a cutting board and let it rest for 10 minutes. In a small bowl, mix the cornstarch with a splash of cold water, then whisk this slurry into the hot pan drippings until the gravy thickens to a velvety consistency.Look for The gravy will thicken and turn opaque as you whisk it into the hot drippings.Tip Use a whisk to ensure no lumps form when adding the cornstarch mixture to the hot liquid.
The turkey is now resting on the carving board, and the gravy has been thickened to a beautiful, velvety consistency. The final dish should look glistening and moist, with a rich, savory aroma that is deeply inviting.
Check that the gravy coats the back of a spoon smoothly without any lumps. Once the turkey has finished its ten-minute rest, it is ready to be carved into thick medallions and served with the warm, flavorful gravy drizzled generously over the top.
Common mistakes
A common mistake is lifting the lid too frequently, which releases the trapped steam and heat, significantly increasing the cooking time and potentially drying out the meat. Another error is failing to let the turkey rest after cooking; slicing it immediately causes the juices to run out, leaving the meat dry.
Finally, ensure you whisk the cornstarch slurry thoroughly into the drippings; failing to mix it properly before adding it to the pot can lead to lumps in your gravy, which affects the final texture.
How to tell it’s done
The turkey is perfectly cooked when it reaches an internal temperature of 165°F (74°C). Use an instant-read thermometer inserted into the thickest part of the breast, avoiding any bones. The meat should look opaque throughout and be extremely tender, pulling away slightly from the center.
If it has not reached the target temperature, continue cooking for another 20 minutes before checking again. Proper doneness ensures the meat is safe to eat while remaining juicy and flavorful for your meal.
- Poultry: 165°F (74°C) in the thickest part
Up next · Part 3 of 3
2 variations · storage & make-ahead · 3 answers · printable card
Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)