Surprise cake - video recipe!

Ingredients

For each cake (2 cakes) :

• 1.5 cups flour
• 3/4 cup sugar
• 4 eggs
• 1/2 cup butter
• 2 tsp baking powder
• + 1 drop of food colouring or 3.5 oz chocolate for one of the cakes.

Preparation

• Bake the first cake : mix together the flour, the sugar, and the baking powder. Add the eggs and mix well. Finally add the melted butter, and mix until the batter is smooth.
• Add a drop a food colouring (or melted chocolate). Mix well, and pour in a cake mould.
  
• Bake 30 minutes at 320°F (160°C). Let it get cold before unmoulding.
• Cut it in slices, and using a heart shaped cookie cutter, cut hearts in each slice.
  
• Put the heart pieces all together and wrap them in plastic foil. Put in the fridge for at least 2 hours (or a whole night).
• Prepare a second cake batter, without food colouring or chocolate this time. In the same cake mould, pour half the batter, then place the first cake heart pieces. Cover with the remaining batter and spread it well on the heart pieces.
  
• Bake 30 minutes at 320°F (160°C).
• There you are, your surprise cake is ready!