By "last meal", I assume they mean the traditional last meal before one is executed.
Answer #1: A fifteen-thousand course meal, each course being served an hour after the previous course.
Answer #2: An apple pie, made from apples grown in hydroponic farms on the lunar colony. I'm willing to wait however long it takes for them to be available.
Answer #3: A meat pie made from the heart and liver of whomever was assigned to execute me. Additional meat pies as necessary should other people be given the assignment.