Crock pots are great for summer time cooking.  You will get a great, easy, home cooked meal, without heating up the kitchen.  I love cooking with wine and I think you will enjoy this recipe.

4 boneless skinless chicken breasts (boneless and skinless is best when using the crock pot)

Salt and black pepper, to taste
1 tablespoon vegetable oil
1 onion, chopped
1/2 cup Marsala wine
2 packages (6 ounces each) sliced brown mushrooms
1/2 cup chicken broth
2 teaspoons Worcestershire sauce
1/2 teaspoon salt
1/2 teaspoon freshly ground black pepper
1/2 cup whipping cream
2 tablespoons cornstarch
8 ounces cooked fettuccine
2 tablespoons chopped fresh parsley

Coat 4 1/2-quart CROCK-POT® slow cooker with nonstick cooking spray. Season chicken with salt and pepper. Transfer to CROCK-POT® slow cooker.
Heat oil in large skillet over medium heat until hot. Add onion. Cook and stir until translucent. Add Marsala and continue cooking 2 to 3 minutes until mixture reduces slightly. Stir in mushrooms. Add broth, Worcestershire sauce, 1/2 teaspoon salt and 1/2 teaspoon pepper. Pour mixture over chicken.

Cover; cook on HIGH 1 1/2 to 1 3/4 hours or until chicken is done.

Transfer chicken to cutting board and let stand. Blend whipping cream and cornstarch until smooth. Stir into cooking liquid. Cover; cook 15 minutes longer or until mixture is thickened. Add salt and pepper, if desired.