Classic No Bake Cookie Recipe: Gran's Fudgy Treat!

Instructions:

1. In a large saucepan, combine sugar, butter, milk, cocoa powder, and salt.
2. Cook over medium heat, stirring constantly, until the mixture comes to a rolling boil.
3. Boil for exactly 1 minute, stirring constantly to prevent scorching. Important step for cookie firmness!
4. Take the saucepan off the heat and immediately stir in the peanut butter and vanilla extract until smooth.
5. Add the quick-cooking oats and stir until completely coated. Work quickly as the mixture will start to thicken.
6. Drop by rounded spoonfuls (or use a cookie scoop) onto a baking sheet lined with parchment paper or a silicone baking mat.
7. Refrigerate for at least 30 minutes, or until the cookies are firm. Check them periodically; they should set up nicely.
8. Once firm, enjoy! Store in an airtight container at room temperature or in the refrigerator.