Ingredients
Equipment
Method
Season and load the slow cooker
- Season the chicken breasts with salt, black pepper, and dried thyme, then place them in the slow cooker.
- Add the sliced mushrooms, minced garlic, and diced shallot around the chicken, then pour in the Marsala wine and chicken broth.
Cook until tender
- Cook on low for 4–5 hours (or high for 2–3 hours) until the chicken is cooked through and tender, with visible bubbling around the edges of the sauce.
Thicken and finish the sauce
- Remove the chicken to a plate.
- Whisk the cornstarch and cold water together, then stir it into the slow cooker sauce.
- Cook on high for 15 minutes until the sauce thickens, looking glossy and coating the back of a spoon.
- Stir in the butter until melted for a smooth, glossy finish.
Serve
- Return the chicken to the sauce to coat, then serve over egg noodles or mashed potatoes.
- Garnish with fresh parsley for a bright, fresh finish.
Notes
For the silkiest sauce, whisk the cornstarch slurry until fully smooth before adding so you avoid lumps. Store leftovers in a sealed container in the refrigerator for up to 3 days; reheat gently until hot throughout. Freezing is not recommended because the sauce texture can change after thawing. For a lower-carb option, serve over cauliflower mash instead of egg noodles or mashed potatoes.
