Preheat oven to 350ºF and line a loaf pan with parchment.
In a small bowl combine the chia with 6 tablespoons of water, set aside to gel.
Meanwhile, grate the beet. Combine the grated beet, oil, sugar, vanilla and almond milk in a small mixing bowl, stir well. Once the chia has gelled mix it into the wet mixture.
In another bowl combine all the dry ingredients, then mix into the wet mix.
Fold the apples into the batter. Transfer the batter into the prepared loaf pan. Thinly slice the remaining apple and place it on top of the loaf. Brush the apples with oil and sprinkle the chopped almonds on, if using.
Bake for 50 minutes or until a toothpick inserted in the centre of the loaf comes out clean. Allow to cool for 10-15 minutes before removing from the pan.