Preheat oven to 375°. In a small bowl, mix 1-¾ cups crushed crackers and ¼ cup sugar; stir in melted butter. Press onto bottom and up side of an ungreased 11-in. fluted tart pan with removable bottom. Bake 7-8 minutes or until edge is lightly browned. Cool on a wire rack.
For topping, in a small bowl, mix flour, brown sugar, and remaining crushed crackers and sugar; cut in cold butter until crumbly. Refrigerate while preparing filling.
Finely grate 1 Tbsp. zest from orange. Cut a thin slice from the top and bottom of the orange; stand orange upright on a cutting board. Cut off peel and outer membrane, starting from the top. Holding orange over a bowl to catch juices, remove orange sections by cutting along the membrane. Squeeze membrane to reserve additional juice.
In a large saucepan, mix sugar, tapioca, baking soda, cinnamon and allspice. Add cranberries, brandy, grated zest and reserved juice; toss to coat. Let stand 15 minutes. Preheat oven to 425°.
Bring cranberry mixture to a full boil, stirring constantly. Add orange sections; heat through. Pour into crust; sprinkle with topping. Bake 10-15 minutes or until topping is golden brown. Cool on a wire rack.
