Peanut Butter Cookies

I made these for my brother on the weekend. I think this is a great recipe. Its from William Sonoma and the cookies are so soft and crumbly.

½ cup melted unsalted butter

½ cup firmly packed light brown sugar

½ cup granulated sugar

1 cup creamy peanut butter

1 large egg

1 tsp. vanilla extract

1.5 cups plain flour

½ tsp. baking soda

½ tsp. salt

In a large bowl add the melted butter, brown and granulated sugar, peanut butter, egg and vanilla extract and stir with a wooden spoon until combined. In another bowl add the flour, baking powder, baking soda and salt. With a whisk, whisk the ingredients together. Add the flour to the butter mixture and mix together. Cover and put in the fridge for at least 2 hours.Preheat the oven to 350F. Grease two baking trays. Using dampened hands shape the dough into small (1-inch) balls. Place on the baking sheets, and either slightly press down with your finger tips, or press the top down with a fork. Bake until the bottoms are golden brown (12-15min).