Top the chilled dough with a couple of teaspoons of jam (strawberry / raspberry with vanilla dough, pineapple / pear with lemon or get creative) and a sprinkling of the streusel. (lottieanddoof.com)
To make the cookies, preheat oven to 325 degrees F. Roll one vanilla dough log into a 12 - inch square. (spoonfulofflavor.com)
Add citrus zest, cinnamon, or cocoa powder to plain vanilla dough, and decorate with a variety of toppings to make a marvelous array of cookies: (marthastewart.com)