Add all ingredients to the mixer bowl and mix with the flat beater at low speed for 1 minute. Scrape down the sides of the bowl with a spatula and then resume mixing at medium speed for 4 minutes. Fill round F20 cake pans with 800g of the mixture and bake in a pre-heated hot air over at 160°C for 35-40 minutes and in a rack oven at 200°C (high) and at 170°C(low) for 60 minutes. Once the cake is cold, cut it in half with a toothed knife and spread the praline Choco day with biscuits with a palette. Finally, cover the cake using the rest of the praline Choco day with biscuits, which you have melted in a microwave oven at 800W for 30-60 seconds.