Blackberry-Lime Sundaes

Directions

1. 1
   Combine sugar, lime juice and butter in large skillet over medium-high heat.
2. 2
   Cook 3 minutes, or until sugar dissolves.
3. 3
   Let cool 2 minutes.
4. 4
   Stir lime zest into syrup, then toss with berries in bowl.
5. 5
   Scoop frozen yogurt into glasses or dessert dishes; spoon berries and sauce over frozen yogurt.
6. 6
   Garnish with lemon slices, if desired.