Homemade Syrup:

Mix together equal parts of brown sugar, granulated (white/regular) sugar, water.
Example:
1/2 cup brown sugar
1/2 cup granulated sugar
1/2 cup water

Bring just to a boil, stirring periodically. 
Remove from heat and if desired, add maple flavoring, or vanilla, or some butter, or some butter flavoring.

I often make mine in the microwave, in 30 second intervals.  It will boil up high though if you don't watch it and will make a huge mess in your microwave.