Plum Cake without Oven - Using Pressure cooker

Christmas is nearing and wanna try this cake. Kids would love to have such cakes. This tastes so yummy and delicious. 

Ingredients :
All purpose flour - 1 1/2 cup
Baking powder - 1 tsp
Spice mix - 1 tsp
Butter - 125 gms
Caster sugar - 1 cup
Eggs - 3
Vanilla essence - 1 tsp
Caramel color - 1 tsp
Dates - 25 gms
Toasted almonds - 25 gms
Candied orange peel - 25 gms
Tuity fruity - 25 gms
Raisins - 25 gms
Colored Tuity fruity - 25 gms
Cashewnuts - as required for garnish
Plum - as required for garnish

Preparation :
1. In a bowl , sieve all purpose flour , baking powder , spice mix. Keep them aside.
2. In a separate bowl , add butter , sugar and beat them using a beater until it becomes soft.
3. Next add one by one eggs and beat them well until all the mixture becomes soft and fluffy.
4. Add vanilla essence , caramel color to this mixture and mix them well.
5. Now add dates , toasted almonds , candied orange peel , Tuity fruity , raisins , colored tuity fruity and combine them well.
6. Now combine the dry ingredient with wet ingredient. Fold them well or use hands so that they mix completely well.
7. Apply butter in the baking pan and dust with all purpose flour. Pour the cake batter into this.
8. Dust the cashews and plums separetely. Arrange them on top of the cake batter before baking.
9. Preheat the oven to 200'c for 10 mins. Firstly bake the cake for 10 mins in 200'c and then lower the temperature to 180'c and bake for 30 to 40 mins or until the cake is done.