PREHEAT oven to 325° F. Grease 10- to 12-inch pizza pan or baking sheet.
PLACE whole bar of dough on prepared pan. Allow to soften for 5 to 10 minutes. Using fingertips, pat dough gently to form 8-inch circle.
BAKE for 18 to 20 minutes or until light golden brown. Cool on baking sheet for 10 minutes; remove to wire rack to cool completely.
DECORATE with icing, sugar and sprinkles as desired.
VARIATION: Try with 1 pkg. (16.5 oz.) NESTLÉ TOLL HOUSE Refrigerated Sugar Cookie Bar Dough. Press cookie dough onto greased large baking sheet or pizza pan to measure an 8-inch circle. Bake at 325° F. for 16 to 18 minutes or until lightly golden.