Add nectarines, blueberries, teaspoon of tapioca flour, chia seeds, 2 tablespoons sugar and lemon juice in a bowl and mix well until all the fruit is well covered by all the remaining ingredients.
Add them in a baking dish, if you think it will stick to the bottom of the pan, rub coconut oil on the bottom and sides.
In the same bowl you prepared the fruit, mix the almonds, flour, 2 tablespoons sugar, cinnamon, vanilla and 3 tablespoons melted coconut oil. Start with 3 tablespoons, it is usually sufficient, but it depends on the type of flour you use.
Top the fruit with the mixture and place in the oven for 20 to 25 min.