In food processor, process the cookies into crumbs. With the processor running, pour in the melted butter and sugar, processing a few seconds until well mixed. Press onto bottom and sides of a 9-inch spring form pan.

Blend cheese in food processor until creamy. Add eggs, vanilla, milk, concentrate, and grated orange peel. Blend until smooth.

Toss 1/2 c. mini-chips with the flour; add to filling and pulse 2-3 times to mix.

Pour filling into crust. Sprinkle with remaining chips.

Bake at 300 degrees for about 1 hour or until cake tester inserted in center comes out clean.