Heat oven to 350 degrees. In medium bowl, combine cookie crumbs, 1/2 teaspoons espresso powder and melted butter; mix well. Reserve 1/4 cup crumb mixture for topping. Press remaining mixture in bottom of ungreased 8-inch square pan.
Beat cream cheese in medium bowl at medium speed until smooth and creamy. Add sugar, remaining 1/2 teaspoons espresso powder, vanilla and egg; blend well. Pour over crust. Sprinkle with reserved crumb mixture.
Bake at 350 degrees for 15-20 minutes or just until center is set. Cool 30 minutes or until completely cooled. Cover loosely; refrigerate 3-4 hours or until firm. With hot, wet knife, cut into bars. Store in refrigerator.