Preheat oven at 350°C or 180°C.
For OTG do it on the baking mode with both the rods and fan on. It will take about 10-15 mins to preheat depending on your oven size.
Line a loaf pan with parchment paper.
Prepare Chia Gel.
Mix Chia seeds in milk/water and keep aside.
In a mixing bowl, mix together whole wheat flour, milk powder, baking powder, baking soda, ¼ tsp salt(if using oil/unsalted butter) and all the spice powders (if using).
In another mixing bowl, add melted butter/oil with sugar and beat to a smooth mix.
Add yogurt and vanilla essence and beat nicely till light and creamy.
Add flour mix, dried nuts and soaked fruit mix.
Keep aside 1-2 tbsp fruit mix and 1 tbsp nuts to garnish on the cake.
Add Chia gel and mix.
Lightly fold the mixture.
Transfer batter the to prepared pan.
Top with the soaked fruits and nuts.
Bake in a preheated oven for 40-45 mins. or till the toothpick/skewer comes out clean. Please note baking time also depends on your oven and cake pan. It can be plus minus 5-10 mins.
Once the cake is done, take out of the oven and keep on the counter.
Insert a tooth pick in the center to check if cake is done. If it comes wet bake again for 10 mins more.
If the cake seems to be very soft, then do not take out of the pan. Let it cool completely.
Once the cake cools completely, carefully take out of the pan.