Coffee Mousse Cake

A light, creamy, moist cake with a mild coffee flavor - just melts in your mouth. Certainly a great deal for only 425 calories per slice :-). 

Source 

Mousse inspired by the Add a Little Love blog; cake, syrup and ganache adapted from “Baking” by James Peterson

Taste 5 (out of 5)

Difficulty 5 (out of 5)

Ingredients

For the “Fluffy Light Butter” cake

- 1 1/4 cup all purpose flour (570 cal)

- 1 3/4 tsp baking powder

- 1/4 tsp salt

- 3/4 cup unsalted butter or margarine at room temperature (1220 cal)

- 3/4 cups + 3 tbsp sugar (720 cal)

- 3 eggs separated (210 cal)

- 2/3 cups milk (85 cal)

- 1 tsp vanilla extract (10 cal)

- pinch of cream of tartar 

For the coffee mousse

- 1 1/2 cups cottage cheese (330 cal)

- 1/2 cup sugar (390 cal)

- 2 tbsp instant coffee (10 cal)

- 2 tbsp vanilla extract (75 cal)

- 1 tbsp brandy (40 cal)

- 2 tbsp gelatin

- 1/4 cup + 2 tbsp water

- 4 egg whites (60 cal)

- pinch of cream of tartar

For the syrup

- 1/4 cup water

- 1/4 cup brown sugar, not packed (140 cal)

- 1/2 tbsp brandy (20 cal)

For the chocolate ganache

- 8 oz dark chocolate (1090 cal)

- 1 tbsp raspberry sauce (50 cal)

- 1/2 cup milk (65 cal)

Total 5085 cal, 12 servings, 425 cal / serving

Instructions

For the cake

1. Preheat the oven to 350F. Butter a 9-inch cake pan.

2. In a bowl, sift together the flour, baking powder, and salt and whisk together.

3. Cream the butter and the 3/4 cup of sugar, with a mixer or a heavy wooden spoon. Whisk in the egg yolks, the milk and the vanilla extract until the mixture is smooth. Whisk in the flour mixture, 1/2 cup at a time. Don’t overwork.

4. Beat the egg whites and cream of tartar for about 2 minutes until soft peaks. Then add the remaining 3 tbsp of sugar and beat until medium peaks. 

5. Whisk one-forth of the egg mixture into the butter mixture to lighten it. Fold the rest of the egg white mixture with a rubber spatula. Spread the batter in the cake pan, and bake for about 40-50 minutes or until a toothpick inserted in the center comes out clean. 

5. Let cool for 5 minutes in a cake pan and then transfer to a cooling rack to cool completely. 

6. When the cake is at a room temperature, insert 4 toothpicks on 4 sides of the cakes, to mark the middle. With a long bread knife, cut the cake into 2 halves lengthwise along the toothpicks. 

For the syrup

7. Mix the sugar with the water and the brandy thoroughly until all the sugar is dissolved. Place in the fridge until the cake is ready to assemble. When the coffee mousse is ready using a pastry brush spread the syrup over the 2 halves and let soak for 3-5 minutes before adding the mousse. 

For the mousse

8. Soak gelatin in 1/4 cup water for 3 minutes, heat it up in a microwave for 1/2 minute. Let it sit for 3 minutes, the gelatin water will become completely clear.

9. Add instant coffee into 2 tbsp of warm water, stir till melts.

10. In a food processor or a blender, process the cottage cheese until smooth. Add the brandy, the coffee, the vanilla essence, 1/4 cup of sugar and the gelatin and blend to uniform consistency.

11. Whisk 4 egg whites with cream of tartar until soft peaks. Add the remaining 1/4 cup of sugar and beat until medium peaks. Fold the egg whites into the cheese mixture. 

12. Spread 1/2 of the mousse over the first layer of the cake, once it’s soaked with the syrup. Place the second cake layer on top of the mousse and spread the remaining mousse over the top and along the sides. It is very convenient to use an offset spatula to smoothen the mousse. 

13. Chill the cake in the fridge for about 3 hours until the mousse sets.

For the ganache

14. Break the chocolate into small pieces. Pour the raspberry syrup over the chocolate. 

15. In a small saucepan heat the milk until simmers. Pour the milk over the chocolate and stir until the chocolate melts and the mixture is of uniform consistency. 

16. Let the ganache cool for about 5 minutes until only slightly warm and pour over the cake. Do not pour hot ganache because it could melt the mousse. 

17. Chill the cake for another 3 hours. 

Afterthoughts

- A very moist and light cake that simply melts in your mouth. The combination of flavors is slightly dominated by the coffee mousse. And it’s quite pretty too :-), at least for an amateur like me - it was my most difficult cake up to date...

- Calorie wise, I used egg whites, low fat cottage cheese and milk instead of cream cheese, sour and whipping creams. Very often these substitutions don’t work well, but in this case they did! So 425 calories a piece is a good deal for such a rich cake. Next time I might substitute yogurt for some of the butter in the “Fluffy Light Butter” cake to make it “an Even Lighter Butter and Yogurt” cake :-). 

- Time wise, this was a lot of work. Together with all the planning and picking and choosing from the different recipes it probably took me 6 hours. If you simply follow the recipe as is, it will still take at least 2-3 hours of active work. But the taste is worth it, especially if you enjoy the baking process.