9 ounces all-purpose flour (about 2 cups)
1/4 cup granulated sugar
1 tablespoon baking powder
1/2 teaspoon baking soda
1/4 teaspoon salt
6 tablespoons chilled butter, cut into small pieces
1 1/4 cups low-fat buttermilk
1 tablespoon grated lemon rind
Cooking spray
1/2 cup all-purpose flour
1 tablespoon butter, melted
1 tablespoon turbinado sugar
4 cups sliced strawberries
1/4 cup granulated sugar
1 tablespoon fresh lemon juice
1 1/4 cups frozen fat-free whipped topping, thawed