Combine granulated sugar, butter, and milk in a large pot. Heat the mixture over medium heat while stirring frequently until the butter is melted.
Raise the temperature to medium-high and allow the mixture to boil for 60 seconds without stirring.
Take the pot off the stove and mix in the peanut butter and vanilla thoroughly.
Incorporate the quick oats and mix until thoroughly combined.
Using a spoon, drop the mixture onto baking sheets that are covered with parchment paper to create separate cookies. Leave the cookies to cool down entirely at room temperature until they are set, which should take approximately 45 minutes.
Notes
Make as bars: Instead of forming individual cookies, press the mixture into a lined baking dish and refrigerate until set and firm. Cut into bar sized pieces for a different presentation.
Alternate Nut Butters: You don't have to limit yourself to just peanut butter. You can explore and experiment with different types of nut butter for a variety of unique flavors.
Peanut Butter Chocolate: This no bake cookie recipe will be enhanced with chocolate chips or cocoa powder. Chocolate and peanut butter are perfect together.