Step 1: Preheat the Oven. Preheat your oven to 350°F (175°C) to ensure even baking.
Step 2: Mix the Wet Ingredients. In a large bowl, combine softened butter, peanut butter, granulated sugar, brown sugar, and vanilla. Cream until light and fluffy.
Step 3: Add the Egg. Beat in the egg until well combined to bind the dough.
Step 4: Combine the Dry Ingredients. In another bowl, whisk together flour, baking soda, and salt. Gradually mix into the wet ingredients until just combined.
Step 5: Form the Cookies. Shape dough into 1-2 inch balls and roll in granulated sugar.
Step 6: Bake. Place on a cookie sheet and bake for 10-12 minutes, until edges are golden brown.
Step 7: Cool. Allow cookies to cool for 5 minutes on the sheet before transferring to a wire rack.
