Banana Fudge And Berry Tart (Dehydrated)

[ Equipment: dehydrator or oven, 9-inch pie pan (7-1/2 inch diameter bottom). For more information about the terminology in this recipe, see Low Temperature Baking: A Journey of 3 Paths ].

This recipe began as an idea for a dehydrated pie. The crust is a variation on dehydrated peanut butter cookies, one of my earliest warm-air-baked cookies on VaporBaker. For a softer crust, increase the amount of peanut butter or a legume butter, as suggested below. Adding more coconut flour would give a crumblier crust. The banana fudge could be served on its own. I’d shape it in a fancy mold and present it with a drizzle of sweet fruit coulis.

I ground my own oat flour from processing traditional rolled oats. The coconut flour is just unsweetened coconut flakes chopped down in a food processor too. I would not substitute the blueberry craisins, as they play off the chocolate background very nicely without commandeering attention. If the local market doesn’t stock blueberry craisins, a mix of chopped dried sweetened cranberries and dried blueberries could work.

At 210 calories per serving, I think of this tart as an affordable dessert, but it could be even lighter with low-sugar ingredients. The maple syrup could be one of those no-sugar syrups. I’ve tried one (Maple Farms) and it works fine. Granulated sucralose or other granulated sweetener could stand in for the sugar. A legume butter in the pie crust dough would cut the calories of the peanut butter. (I don’t recommend a legume butter in step 1 of the assembly, because the peanut butter is meant to be a waterproof coating for the dried crust.) That’s a total reduction of over 400 calories per tart or 50 calories per serving.

This semi-raw tart can be made 100% raw by replacing the maple syrup with a liquid sweetener like honey. Although the tart can be optionally chilled before serving, it is a true dehydrated pastry that doesn’t need refrigeration. The recipe dehydrates at a higher 150°F/65.6°C temperature, to accelerate the preparation, which may impact flavor slightly. However, this tart has flavor to spare.

Makes 8 servings
– 210 calories per serving
– Oven Temperature: 150°F/65.6°C dehydrator

Tart Crust:

  • 1/2 cup oat flour (coarsely ground – see text)
  • 1/4 cup coconut flour (see text)
  • 2 to 3 tablespoons peanut butter or legume butter (see text)
  • 3 tablespoons maple syrup

Banana Fudge:

  • 1 large banana (8 inches)
  • 1 medium zucchini (5 to 6 oz.)
  • 1/4 cup unsweetened natural cocoa powder
  • 3 tablespoons sugar
  • 2 tablespoons maple syrup
  • 1/4 teaspoon powdered cinnamon
  • 1/2 teaspoon vanilla
  • 1/4 cup blueberry craisins


  • 3 tablespoons peanut butter
  • 3 or 4 dried apricots

Tart Crust Method:

1. In a medium bowl, combine the oat flour and coconut flour.

2. Stir in the maple syrup and 2 tablespoons peanut butter to form a moist, pebbly meal.

3. Press the dough into a greased, 9-inch pie pan, covering just the bottom of the pan.

4. Perforate the dough every 1/2 inch.

5. Dehydrate for about 2 to 3 hours until the dough has pulled away from the sides of the pan. If pushed a little, the entire crust should loosen in one piece. Do NOT unmold the crust. Set aside.

Banana Fudge Method:

1. In the small to medium bowl of a food processor, finely chop 1 zucchini.

2. Add the banana and maple syrup. Process until mixture becomes a whipped puree.

3. Add sugar and cocoa powder and process for about 1 minute.

4. Add vanilla and cinnamon, and process until well combined.

5. Pour mixture into a baking dish and spread out. Dehydrate for 3 to 4 hours until about 1/3 original volume. Every hour, stir the mixture to break any skin formed on the surface.

6. Mix in the blueberry craisins.

Assembly Method:

1. Soften 3 tablespoons of peanut butter in the microwave (about 15 to 20 seconds). Spread a thin layer of peanut butter over the top of the tart crust.

2. Cover the top of the crust evenly with the banana fudge. Spread the fudge with the back of a spoon.

3. Slice the dried apricots into thin slivers and sprinkle over the fudge.

4. If desired, cover and chill the tart for about 30 minutes to an hour before serving.


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