Preheat your oven to 350°F (175°C).
Line a baking sheet with parchment paper.
In a mixing bowl, combine 1 cup of crunchy peanut butter, 1 cup of granulated sugar, 1 egg, and 1 teaspoon of vanilla extract. Mix until smooth.
Gently fold in 3/4 cup of Heath toffee bits into the dough.
Scoop out portions of the dough, roll them into balls, then roll in granulated sugar before placing on the prepared baking sheet.
Bake in the preheated oven for 10-12 minutes until edges are golden brown.
Allow to cool on the baking sheet for a few minutes before transferring to a wire rack.