- If you'd like to to use an Oreo Crust, Crush 1/2 package of Oreos, 4 tablespoons melted butter, 1 tablespoon sugar. Pulse until smooth in blender or food processor. Press the crumbs into a 9 inch pie plate. Bake at 350 degrees for 10-15 minutes. Let cool completely and fill!-I purchase large bags of frozen raspberries at Costco (SLC on 300 west) they come in a bag with about 18 cups per bag and are quite a bit less expensive than small bags of frozen berries at grocery stores.