In a medium sauce pan combine sugar, cornstarch, lemon juice and water. Cook over medium heat until thick and warm. Add strawberries and stir to coat.
Pour into an 8x8 baking dish and dot with butter.
For the topping:
In a medium bowl stir together the flour, baking powder and salt. Cut in the butter and use your hands to work it into the dry mixture until crumbly. Stir in the half & half and zest. Mixture will be soft.
Scoop the biscuit dough over the berries and sprinkle with raw sugar.
Bake for 25 minutes or until biscuits are slightly golden and berries are bubbly. Allow to cool slightly and serve warm with ice cream.