- 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.