Preheat oven to 400 degrees.
Mix flour, 4 tablespoons sugar, baking powder, and salt in a large bowl.
Using your fingers, or a pastry cutter, rub butter into the flour mixture until it resembles coarse meal.
Add egg and buttermilk and stir until dough forms. Dough will be slightly sticky.
"Drop" dough onto a lined baking sheet, creating 12 balls. They will look imperfect. Sprinkle remaining sugar on top of biscuits.
Bake 15-20 minutes until lightly brown on top.
Pour heavy whipping cream into a mixing bowl. Using the metal whisk attachment, beat cream on medium-high until stiff peaks form.
Add powdered sugar and vanilla extract, being careful to not overbeat the whipped cream.
Slice biscuit in half, alternating layers of biscuit, whipped cream and strawberries.