I freeze this recipe. I usually divide the mix into 2 or 3 portions and then they make about 6-10 biscuits.

Chewy Chocolate Chip Biscuits
125gm butter
1/3 cup sugar
1/3 cup brown sugar
1 tsp vanilla
1 egg
2/3 cup SR flour
1 cup plain flour
200gm chocolate chips

Cream butter, sugar and vanilla
Add egg
Add flour
Add chocolate chips
Combine well after each addition
Spoon teaspoon sized blobs onto lined babking tray
Bake 13-15 mins at 200C, till just brown.
They should be too soft to remove from the tray until cooled- overcooking makes them crunchy, not chewy.