A couple months ago I bought an ebelskiver pan from Williams-Sonoma. I made a batch of my homemade pancake batter, put a baby pat of butter in each section of the pan, waited for it to melt and sizzle, filled each hole half full, waited for them to puff a bit, put two teaspoons of leftover sweet potato casserole in the center of each ebelskiver, and then carefully turned each one over by rotating them with two forks.
Giddy up good! They didn't even need syrup. These would be wonderful stuffed with peanut butter, chocolate, jam, cinnamon applesauce, bananas, etc.