Slow Cooker Colcannon Potatoes is a traditional Irish dish made with mashed potatoes, cabbage, and onions. This hearty and comforting side dish is perfect for St. Patrick's Day or any time you want a delicious and easy-to-make meal. The slow cooker method allows the flavors to meld together, resulting in a creamy and flavorful dish. Serve it alongside corned beef or as a standalone vegetarian option. It's a crowd-pleaser that will leave everyone asking for seconds!