Place chopped chocolate in a medium bowl. In a small saucepan, bring heavy cream and butter just to a boil.
Pour cream-butter mixture over chocolate in bowl; stir until melted. Chill at least 2 hours until set.
Meanwhile, pulse strawberries in a food processor until finely crushed. When chocolate mixture is fully chilled, use a small cookie scoop to form 1-inch balls.
Roll each ball in crushed strawberries. Chill until set.