In a medium to large saucepan, whisk together the sugar, cocoa powder and salt. Whisk in the milk. Add the butter and set over medium high heat, stirring as the butter melts.
Bring mixture to a boil. Once it's at a rolling boil (meaning it continues to boil while stirring), set a timer for 1 minute and continue to stir constantly.
Once the 1 minute is up, remove from heat and stir in vanilla and peanut butter, followed by the oats. Let the mixture rest for 3-4 minutes, stirring often, just until it starts to thicken and hold together. Mixture should still be plenty soft and shiny.
Use a cookie scoop or spoon to drop mounds of the mixture onto wax paper or parchment paper. If desired, flatten with the back of the spoon. (If the mixture has cooled a little too much, it might need just a bit of flattening.)
Let the cookies cool and set up completely, which should only take about 10-15 minutes. Transfer to an airtight container for storage and enjoy cookies within a few days while they're still fresh.
- I prefer to use quick oats, as they make for a more tender chewy texture. Traditional old-fashioned oats will works just fine too, but the cookies will have a heartier texture. Use what you have!
- Don't over cook! Make sure to set a timer and stick to it. Cooking the mixture too long will remove too much moister, resulting in cookies that are dry, crumbly and grainy.
Calories: 174kcal, Carbohydrates: 25g, Protein: 3g, Fat: 8g, Saturated Fat: 3g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 3g, Trans Fat: 0.2g, Cholesterol: 11mg, Sodium: 56mg, Potassium: 90mg, Fiber: 2g, Sugar: 18g, Vitamin A: 126IU, Calcium: 17mg, Iron: 1mg