"This simple twist on green bean casserole uses prepared Alfredo sauce for a base. The green beans and sauce combined with water chestnuts, roasted red peppers, ripe olives, and French-fried onions creates a dish with great flavor, color, and texture. Experiment with your microwave's timing to cook this in a casserole dish for a speedier version that works just as well."
Combine green beans, onions, Alfredo sauce, water chestnuts, olives, roasted red bell peppers, parsley, salt, and black pepper in a 4- to 6-quart slow cooker. Cover and cook on High until flavors are combined, 3 to 4 hours.