Peel the ham apart piece by piece ( so the ham will not cook in a clump and so the sauce evenly coats each piece of ham) and place it in the crock pot. Add equal parts of grape jelly and ketchup. Because buying meat from the deli is usually slightly under or over the poundage wanted, start with 1 cup of each. If it does not look like enough add an additional 1/4 cup of each, this should be plenty. Turn the crock pot on low heat and cook for 2 hours, stirring occasionally. Toast up some bagels and spread them with cream cheese. Fill the bagels with some of the ketchup/grape jelly ham and top with a few banana peppers. * Please keep in mind that all crock-pots differ in temperatures. My crock-pot is the actual crock-pot brand.