Sweet creamy peanut butter surrounded by a soft chocolate cookie. There's a little surprise to them that's really fun!
In a large mixing bowl, beat together butter, the ½ cup granulated sugar, brown sugar and the ¼ cup peanut butter with an electric mixer until combined. Add egg, milk and vanilla; beat well. Beat in as much of the dry ingredients as you can with mixer (as the mixture will be very thick). Stir in remaining dry ingredients by hand. Form chocolate dough into 32 balls about 1 ¼ inches in diameter. Set aside.