In a large bowl, whisk together the flour, ground almonds, baking powder, baking soda, salt, and cinnamon.
Pour in the maple syrup, oil, plant-based milk, vinegar or lemon juice, and vanilla extract. Stir until just combined, don’t overmix.
Pour the mixture into a lined baking dish. Top with the red currants and gently push them into the dough.
Bake at 180 °C / 350 °F for 35-40 minutes. I like to loosely cover the cake about halfway through the baking time. It helps keep the berries from turning too dark. Let the cake cool. To serve, dust with powdered sugar.