The Kitchn: A foolproof method to make no-bake cookies
1 teaspoon vanilla extract
1. Line two baking sheets or a work surface with parchment paper.
2. Measure 3 cups oats and 1 cup smooth peanut butter into a medium bowl and have these standing by.
3. Place 2 cups granulated sugar and 1/3 cup cocoa powder in a large pot and whisk to remove any lumps.
4. Add 1 stick unsalted butter, 1/2 cup whole milk and 1 teaspoon vanilla extract to a large pot and bring to a boil over medium-high heat. You can cover the pot to speed the process along, but it will take about 5 minutes to simmer and then quickly come to a boil.
5. Once the mixture is boiling, boil for 1 minute; the boil should be thick and foamy and reach a temperature of 230 F. You can stir the mixture with a heatproof spatula as needed while the mixture cooks.
6. Remove the pot from the heat. Add the oats and peanut butter, and stir vigorously to coat.
7. Use a small ice cream scoop or 2 spoons to drop tablespoons of the cookie dough onto the parchment paper.
8. Let the cookies cool until they are firm to the touch, 25 to 30 minutes.