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Milk Chocolate Chip Peanut Butter Cookies
Ingredients
1 cup all-purpose flour  
1 teaspoon baking soda   
1/2 teaspoon salt    
1/4 lb. [1 stick] unsalted butter, softened
1/2 cup granulated sugar  
1/3 cup packed light brown sugar
1 large egg
1 teaspoon pure vanilla extract
3/4 cup smooth peanut butter
2 cups milk chocolate chips

Method
Position 2 oven racks in the middle and upper third of the oven. Preheat oven to 325.
Line 2 baking sheets with aluminum foil.

Sift the flour, baking soda, and salt together. Set aside. Put the butter, granulated sugar, and brown sugar in the bowl of an electric mixer and beat on medium speed for about 1 minute or until mixture is smooth. Add the egg and vanilla and mix on low speed for about 15 seconds or until they are blended thoroughly. Stop the mixer and scrape the bowl during that time. Add the peanut butter and mix until smooth. Decrease the speed to low and add the flour mixture, mixing just until the mixture is incorporated.
Stir in the chocolate chips.

Use 2 level tablespoons of dough for each cookie. Place mounds of batter about 2 inches apart on the prepared baking sheets. Bake the cookies evenly until light brown, 22 to 24 minutes. After 10 minutes of baking, reverse the baking sheets front to back and top to bottom to ensure even browning. Watch the cookies carefully as they near the end of their baking time. Cool the cookies thoroughly on the baking sheets. The tops of the cookies will look crinkled.