01 - Unwrap ham and pat dry thoroughly. Trim edges if needed to fit slow cooker, keeping slices intact. Position ham flat-side down in the cooker.
02 - Combine honey, brown sugar, Dijon mustard, melted butter, juice, cinnamon, cloves, nutmeg, and black pepper in a mixing bowl. Whisk until smooth.
03 - Pour glaze evenly over ham, ensuring some flows between slices for even flavor distribution.
04 - Cover and cook on LOW setting for 4 hours until ham is thoroughly heated and tender. Baste with collected glaze from the bottom at least twice during cooking process.
05 - Preheat broiler. Carefully transfer ham to baking sheet. Spoon extra glaze on top, then broil for 3–5 minutes until glaze bubbles and caramelizes.
06 - Allow ham to rest for 10 minutes before slicing and serving for optimal juiciness.