"Korovka" Peanut Cake

For 9 layers 20 cm in diameter:
250 g of all-purpose flour
150 g of butter
100 g of sugar
1 large egg
1 tbsp caramelized sweetened condensed milk
130 g of peanut
1 tsp of baking powder
a pinch of salt
For the cream:
Option 1:
300 ml heavy whipping cream
1 can of caramelized sweetened condensed milk
30 g of chocolate
Option 2:
1-1.5 can of caramelized sweetened condensed milk
200 g of butter
30 g of chocolate
50 g of peanut cake decorating
The cake is 1.4 kg