I found that adding the flavoring syrup allowed me to sweeten up the strawberries while putting a little extra kick in the flavor.
1 peeled banana, sliced
5 large strawberries, sliced
1 Tbsp raspberry flavoring syrup (can use sugar-free version if you like)
1/2 cup crushed ice
No nutrition information available
Toss banana & strawberry slices in blender with crushed ice, pulse on frappe until no chunks of ice are visible. Pour in raspberry syrup and pulse once more.