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1
For pie crust, mix together finely crushed Oreo cookies and melted butter in medium bowl.
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2
Press firmly on bottom and sides of 9-inch pie plate.
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3
Sprinkle gelatin over 1/4 cup cold milk in a small saucepan; let stand for 1 minute.
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4
Cook over low heat for 3 minutes, stirring until gelatin is completely dissolved.
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5
Blend ricotta, remaining 1/2 cup milk, sugar, vanilla and orange peel in electric blender until smooth.
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6
Gradually add gelatin mixture while blending.
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7
Pour into large bowl and refrigerate, stirring occasionally 30-45 minutes or until mixture mounds slightly when dropped from spoon.
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8
Coarsely chop 6 cookies; fold into cream mixture.
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9
Spread into pie crust.
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10
Refrigerate for 3 hours or until firm.
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11
Halve remaining 3 cookies.
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12
Garnish pie with whipped cream, cookie halves and orange slices.