Start by cooking the onion until it's lightly browned. This will add a sweet and caramelized flavor to the hash.

Next, stir in the veggies of your choice. Carrots and bell peppers work well, but feel free to get creative with other vegetables you have on hand. Cook the veggies until they are tender.

Add the cooked corned beef to the slow cooker. You can either shred it or chop it into small pieces, depending on your preference.

Season the ingredients with fresh parsley, ground black pepper, dried thyme leaves, and salt to taste. These spices will complement the flavors of the corned beef and vegetables.

Mix everything together in the slow cooker, making sure all the ingredients are well combined.

Cook the corned beef hash on low heat for 6 to 8 hours or on high heat for 3 to 4 hours. Cooking it slowly will allow the flavors to meld together and create a delicious dish.

Once the hash is cooked, serve it hot and enjoy your homemade corned beef hash!