Pre heat oven to 350 degrees. Pour 1 1/2 cups water, 4 1/2 TBSP Brown Sugar and 3TBSP Worcestershire Sauce in baking dish and stir. Layer precooked boneless ham slices (1/4 inch thick) (I did 10 slices with was about 5 lbs meat) to dish and coat with sugar water mixture. Cover tightly with tin foil. Cook in oven for 10-12 minutes per pound of ham, until internal temp reaches 140 degrees.