1. Pre-heat the oven to 350ºF (180ºC). Put together an 8 &1/2 inch cake pan with a detachable backside by chopping a circle of parchment paper to suit the underside. Rub the edges of the pan with some non-dairy butter and mud them with flour.
2. Place the diced candy potato in a steamer basket over a pot with water, cowl with a decent becoming lid and steam till very tender.
3. In a bowl, combine the all goal flour, complete wheat flour and oat flour, in addition to the cinnamon, baking powder and salt. Put aside.
4. As soon as the candy potatoes are tender, add them to the bowl of your standing mixer together with the three & 1/2 tablespoons of non-dairy butter and blend on excessive till mixed and barely whipped.
5. Add the maple syrup and vanilla extract and blend till you will have a creamy texture, then with the machine operating on medium, add the flour combination a spoonful a time till you will have the consistency of a crumbly dough.
6. In a pot add the non-dairy milk and the finely chopped dates and convey it as much as a boil on excessive warmth. As quickly because it begins effervescent, flip off the warmth and add the baking soda after which the vinegar. The combination ought to bubble and develop.
7. Flip your mixer again on, on low, and begin including the date milk combination a bit at a time and blend solely till included, lumps are completely high-quality so long as you see no unfastened flour.
8. Pour the batter into your ready pan and bake within the pre-heated oven for 40-50 minutes or till a toothpick or skewer inserted within the heart comes out clear. If at any level your cake begins browning an excessive amount of with out the within being cooked via, cowl the pan with foil and prepare dinner coated for the remaining time.
9. As soon as the cake is out of the oven, let it cool within the pan for 10 minutes, then rigorously take away it from the pan and let it cool fully on a rack.
10. In case your cake has domed or risen an excessive amount of, slice the highest off with a serrated knife to degree it off in order that it sits flat. Place it reduce facet down on a serving platter.
11. To arrange the toffee glaze, add all of the elements to a small pot. Deliver them to a boil whereas whisking always. As soon as boiling, decrease the warmth and let it simmer for two minutes till creamy. Take away from the warmth.
12. Place the cake dome or reduce facet down on a serving platter or cake stand and use a skewer to poke holes all around the high of the cake. Pour the toffee sauce over the cake, tilting the plate in order that it covers the highest and drips barely down the edges. Serve and revel in!