Crock Pot Sauerkraut Supper

Name: Crock Pot Sauerkraut Supper
Ingredients: 1 quart vinegar-pickled sauerkraut, drained and rinsed well; 1⁄2 lb bacon, cut into small pieces; 1 granny smith apple, cored and cubed; 1 ripe pears or 1 an additional apple, cored and cubed; 1⁄2 cup chopped onion; 2 stalks celery, chopped; 3 lbs smoked sausage, cut into 1/2 inch pieces; 2 tablespoons olive oil; 2 tablespoons butter; 3 tablespoons flour; 3 tablespoons dark brown sugar; 1 tablespoon minced garlic; 1 tablespoon Dijon mustard; 12 ounces hard alcoholic cider; salt & freshly ground black pepper, to taste