Misspotae's Recipes: Peanut Butter Cookies

Ingredients

• 8 tablespoons (1 stick) unsalted butter
• 3/4 cup smooth peanut butter
• 1/2 cup granulated sugar
• 1/2 cup packed dark-brown sugar
• 1 large egg
• 1/2 teaspoon pure vanilla extract
• 1 cup all-purpose flour
• 3/4 teaspoon baking soda