Rinse strawberries under running water quickly. Then dry the strawberries thoroughly after washing them.
Cut off the stems and slice the strawberries. Set them aside.
Cook sherry and sugar on medium heat until the sugar is melted. Let the liquid cool down.
In a large bowl, add room temperature butter and beat with a hand mixer until creamy. Add heavy cream and continue whipping until light and fluffy.
Add strawberries to the dessert glasses.
Pour the cooled sherry liquid into each glass.
Top the whipped buttercream and place it in the fridge for30 minutes.