Preparation Steps

• Preheat the oven to 350°F (175°C).
• In a medium bowl, whisk together the flour and baking soda.
• In a large bowl, cream together peanut butter, butter, granulated sugar, and brown sugar until smooth.
• Beat in the egg and vanilla extract until well blended.
• Gradually add the dry ingredients to the peanut butter mixture, mixing just until incorporated.
• Roll the dough into 1-inch balls and place on ungreased cookie sheets.
• Make a small indentation in the center of each cookie and fill with about 1/4 teaspoon of jelly or jam.
• Bake for 8-10 minutes, until the edges are set and lightly golden. Let cool before serving.