2-3small clementine oranges= total weight of orange with skin on is 5oz
**total volume measure of pureed orange with the skin on is a scant ½ cup
Vanilla Extract 2 teaspoons10ml
All Purpose Flour 1½ + 1/3 cup230g
Egg Replacer * I am using Bob's Red Mill 1½ teaspoons
Granulated Sugar ¾ cups150g
Baking Powder 3 teaspoons
Salt ¾ teaspoon
Vegetable Oil 9 Tablespoons135ml
For the Buttercream Icing:
Vegan Butter 1½ Cups3 sticks (336g)
Confectioners Sugar 3 cups360g
Orange Extract 1 teaspoons *optionalyou may sub in vanilla instead
Butter Extract ½ teaspoon *optional
Salt ¼ teaspoon
Orange Zest from 1 large navel orangeapproximately 2 teaspoons
For the Custard:
Plant Milk 2¼ cup533ml
Granulated Sugar ¾ cup150g
Cornstarch 5 Tablespoons40g
Vegan Butter 1½ Tablespoons21g
Vanilla Extract 1 teaspoon5ml
Instructions
Preheat the oven to 350°F
First wash the skins of the oranges very well with warm water
Next pull of the hard stem of the orange (if there are any) and check the oranges inside for seeds by slicing them in half and remove seeds if there are any.
The skins stay on the orange, so leave that intact.
Place all of the cake ingredients including the oranges into a food processor and processor until smooth batter (about 30 seconds)
Divide the batter evenly amongst your greased & parchment lined cake pans
Bake in a preheated oven at 350°F for about 20minutes or when a toothpick inserted into the center comes out clean.
Next prepare the orange buttercream icing: Whip the vegan butter with an electric mixer until light and fluffy on medium to high speed for about 3 minutes.
Scrape the sides and bottom of the bowl to make sure it is evenly mixed and add the salt and orange zest and the extracts
Turn the mixer speed down to low and add the sifted confectioners sugar
Mix on low speed until all is incorporated , then scrape the bottom and sides of the bowl and mix on high speed for another 3 minutes.
Next prepare the custard recipe combine all the ingredients except for the vanilla extract and the vegan butter in a medium sauce pot over and cook over medium to high heat and bring to a boil stirring constantly to avoid scorching the bottom .
Once it starts to bubble let it boil on low heat for about 10 seconds.
Remove from the heat and add the vegan butter and vanilla extract and stir until melted and smooth.
Once the cakes are completely cooled (I Like to refrigerate mine for several hours to make sure they are also very COLD)
Build the cake with a ring of buttercream to hold in the custard filling.
Crumb coat and then do a final icing with the buttercream
I garnished the cake with toasted cake crumbs from the trimmed cake layers, this is optional
Video
Notes
Due to the custard filling this cake must be kept refrigerated at all times & will stay fresh loosely wrapped for up to 5 days