Add about 4 cups of the sliced strawberries and the granulated sugar to a medium saucepan over medium-high heat. Bring to a boil and cook for 2-3 minutes, stirring occasionally, until the sugar dissolves and a syrup forms.
Remove from heat and transfer the mixture to a blender or food processor. Blend until smooth.
Pour the strawberry puree into a bowl and stir in the remaining sliced strawberries. Cover and refrigerate while preparing the biscuits and whipped cream.
Prepare homemade biscuits or bake store-bought biscuits according to package or recipe instructions. Let the biscuits cool to room temperature.
Add the heavy whipping cream to a mixing bowl. Begin mixing on low speed, gradually increasing to medium as the cream starts to thicken.
Add the confectioners’ sugar and continue mixing, increasing the speed to high, until stiff peaks form. Watch closely so the cream does not overmix.
To assemble, slice each biscuit in half. Spoon strawberry sauce over the bottom half, add whipped cream, then place the biscuit top over it. Add more strawberries and whipped cream if desired. Serve immediately.