Reese's Chewy Chocolate Cookies

Why I Love This Recipe
Baker unknown. From Hershey's website
Ingredients You'll Need
3/4 cup HERSHEY'S Cocoa
1 teaspoon baking soda
1-2/3 cups REESE'S Peanut Butter Chips (10-oz. pkg.)
1-1/4 cups butter or margarine (2-1/2 sticks), softened
2 eggs
2 cups sugar
2 teaspoons vanilla extract
2 cups all-purpose flour
1/2 teaspoon salt
Directions
Heat oven to 350°F. Stir together flour, cocoa, baking soda and salt; set aside.
Beat butter and sugar in large bowl with mixer until fluffy. Add eggs and vanilla; beat well. Gradually add flour mixture, beating well. Stir in peanut butter chips. Drop by rounded teaspoons onto ungreased cookie sheet.
Bake 8 to 9 minutes. (Do not over bake; cookies will be soft. They will puff while baking and flatten while cooling.) Cool slightly; remove from cookie sheet to wire rack. Cool completely.