Add all the dry ingredients to a large bowl. Then, preheat the oven to 360F, line the bottom of a 7-inch round springform pan with parchment paper, and grease the sides with oil.
Transfer the batter to the springform and bake for 35 minutes, or until a toothpick inserted into the center comes out clean. Then move to a cooling rack and allow to cool.
Combine the chocolate and nut butter over a double boiler (a medium heat-proof bowl placed over a pan with simmering water). Stir occasionally until it’s melted.
You can enjoy a slice of this chocolate cake alone, with a cup of coffee/tea, or enjoy it as a dessert (warm or not) with a scoop of ice cream or vegan custard.