Ingredients

For the cake

150 g semi-whole wheat flour
150 g millet flour
a pinch of whole sea salt
half a teaspoon cream of tartar
4 Granny Smith apples
160 ml unsweetened and unflavoured almond milk
100 ml extra virgin olive oil
170 g rice malt syrup
a few pinches of vanilla powder

For the rice malt caramel sauce

250 g rice malt syrup
150 ml vegetable cream (I used almond cream)
a pinch of whole sea salt
2 tablespoons muscovado sugar
1 teaspoon natural vanilla extract
1 tablespoon cornstarch, dissolved in 2 tablespoons filtered water

Makes 1 cake (20-22 cm). 

Directions

Preheat the oven to 180° C. In a bowl, combine wheat flour, millet flour, salt and cream of tartar. Peel, core and thinly slice 2 apples. Line a cake pan (20-22 cm) with parchment paper and arrange the apple slices in a single layer on it on concentric circles, making sure there are no gaps. Peel, core and cut into pieces the remaining apples and put them in the bowl of a mixer, add the almond milk, olive oil, rice malt syrup and vanilla and process until very smooth. Add the wet mixture to the dry ingredients and fold together quickly. Pour the batter on top of the sliced apples and bake for 40-45 minutes.

To make the rice malt caramel sauce, combine the rice malt syrup, vegetable cream, salt, muscovado and vanilla in a small, heavy-bottomed saucepan and bring to a boil. Turn the heat down a bit and continue  to cook for 10-15 minutes, stirring regularly. Do not overcook. Add cornstarch, cook for a few more minutes, until the sauce thickens further to your preferred sauce consistency. Turn off the heat.
Remove the cake from the oven, let cool slightly for 5-10 minutes, transfer the cake onto a wire rack or a plate, pour the rice malt caramel sauce on top of it and let cool completely before serving.