Yeh, old Homer doesn't inspire me, though he can be very funny. But as a role model, I patterned myself after a fusion of Bugs Bunny and Superman. I have the former's sense of humor, but am way better looking.
For your filling, replace the cream cheese that everyone is suggesting and use marscapone cheese instead. It has the texture of cream cheese and the flavor of sweet cream. It is wonderful with pure, grade-B maple syrup (grade b has more flavor than does grade-a, and a darker color as well). I've mixed the two and it is a tremenous flavor.
Seeeeeeya; Goodweed of the North