A date cake in a cool pi mold

I made this date cake for christmas table. I made it in a pi model we bought from New York last summer. So here's the recipe:

A date cake

• 250g Dates
• 3 dl Water
• 1.5 dl Sugar
• 200g Margarin or butter
• 2 Eggs
• 2 tspns Baking powder
• 2 tspns Vanilla sugar
• 3.5 dl Wheat flour

Chop the dates and boil in a pan with water and sugar until pureed. Add water to the warm mixture and let it melt. Chill and add the eggs one by one while whisking. Compound baking powder and vanilla sugar with flours. Add to the date mixture.Mix as little as possible. Pour into an oiled mold and cook in 175°C for about an hour.