Create the Bisquick baking mix by combining the flour, baking powder, sugar, and salt.
Add the cold butter cubes and rub them with the flour mixture until crumbly.
Blend the Bisquick baking mix, sugar, melted butter, and milk to form a soft dough.
Divide the dough into equal portions of your preferred shape. Place them on a greased or baking paper-lined tray.
Bake at 350°F (180°C) for about 15-18 minutes or until the shortcakes are golden brown. Remove from the oven and allow to cool for at least 10 minutes.
Chop the strawberries into pieces. Stir in sugar and freshly squeezed lemon juice. Set aside.
Add the heavy cream and powdered sugar into a large bowl. Beat them until fluffy.
Assemble the Bisquick strawberry shortcakes. For each one, place a cool shortcake on a plate and cut off the top. Spread with the whipped cream and put chopped strawberries on top. Cream again, and put the top back.
Decorate with ground nuts, dried edible flowers, or extra strawberry chops.