Line a baking sheet with parchment paper. This will prevent the toffee from sticking and make it easy to remove once it cools.
In a heavy-bottomed saucepan, combine the unsalted butter, granulated sugar, and salt. Cook over medium heat, stirring constantly until the butter is melted and the mixture is well combined.
Continue to cook the mixture, stirring frequently, until it reaches a temperature of 300°F (hard crack stage) on a candy thermometer.
Once the toffee mixture reaches 300°F, remove it from the heat and quickly stir in the chopped almonds. Pour the mixture onto the prepared baking sheet and spread it evenly.
While the toffee is still hot, sprinkle the mini semisweet chocolate chips over the top. Let them sit for a minute or two to melt, then use a spatula to spread the melted chocolate evenly over the toffee.
Allow the toffee to cool completely at room temperature. Once it has hardened, break it into pieces and enjoy your homemade Almond Toffee!
