Gather 2 cups sugar, 1/2 cup milk, 1/2 cup butter, 1/4 cup cocoa powder, 3 cups quick oats, 1/2 cup peanut butter, and 1 teaspoon vanilla extract
Line a baking sheet with parchment paper or wax paper
In a saucepan, combine sugar, milk, butter, and cocoa powder
Bring the mixture to a boil over medium heat
Boil for 1 minute
Remove the saucepan from heat
Stir in peanut butter and vanilla extract until smooth
Add the oats and mix well
Drop spoonfuls of the mixture onto the prepared paper
Let the cookies cool and set at room temperature
Store the cookies in an airtight container