Fill a pot with butter, sugar, and salt. Cook over medium heat, stirring often, until the mixture turns amber and reaches 300°F (150°C).
Pour the mixture into a parchment-lined baking pan. Sprinkle the chocolate evenly over the top and allow it to sit until slightly melted; then use a spatula to smooth the chocolate. Top evenly with almonds, pressing gently so the nuts adhere to the chocolate.
Refrigerate until set. Break into pieces and serve.