My copy of baking with Stevia came in today's mail, and it has a recipe for Blackberry Cream Pie.
(I'm assuming you don't need the crust recipe.)
FILLING
4 cups ripe blackberries (fresh or frozen)
1 cup of water
1 cup of unsweetened apple juice
2 tablespoons lemon juice
pinch of salt
10 ounces soft or silken tofu
1 teaspoon vanilla extract
3/4 teaspoon stevia extract powder (without fillers)
3 tablespoons agar-agar (or 1.5 pkgs gelatin)
Cook the blackberries in the water, apple juice, lemon juice and salt until the fruit is completely broken down. After cooking press the the berries through a fine-mesh strainer to remove the seeds. This will yield 2 cups of hot berry juice. If you have more, reduce it to 2 cups by boiling it down.
Blend the tofu, vanilla and stevia in a blender with one cup of berry juice until creamy.
Place the other cup of berry juice in a small pan. Dissolve the agar-agar in the hot sauce. bring it to a boil and reduce the heat to a simmer cooking until all the agar-agar is dissolved, about 3 or 4 minutes, stirring occasionally.
Add the agar-agar/berry sauce to the mixture in the blender and process until it is smooth and creamy.
Pour the blender contents into a cooked pie shell and chill 1- 2 hours.