1. In a large bowl, cream shortening and brown sugar until light and fluffy. Add eggs, one at a time, beating well after each addition. Stir in pumpkin and orange juice concentrate. Combine the flour, baking powder, cinnamon, baking soda, nutmeg and allspice; add to the creamed mixture alternately with milk, beating well after each addition.
2. Pour into two greased and floured 9-in. round baking pans. Bake at 350° for 28-32 minutes or until a toothpick inserted near the center comes out clean. Cool for 10 minutes before removing from pans to wire racks to cool completely.
3. For filling, in a large bowl, beat cream cheese until light and fluffy. Add confectioners' sugar and pie spice; beat until smooth. Fold in whipped topping and pumpkin.
4. Cut each cake horizontally into two layers. Place bottom layer on a serving plate; spread with a fourth of the filling. Repeat layers three times. Sprinkle with pecans; drizzle with caramel topping. Store in the refrigerator. Yield: 12 servings.