Step 1

Cream the eggs, sugar and vanilla sugar together until light and airy.

Step 2

Mix the flour and baking powder and add it to the dough using a sieve to get rid of any clumps.

Step 3

Melt the butter in a pot and add the milk.

Step 4

Fold in the melted butter and milk mixture into the dough.

Step 5

Line a pan tall enough to include the topping 8x12 inches (22x32 cm) with parchment paper or coat it in butter and flour and pour in the dough.

Step 6

Bake in a preheated oven at 350 F (175 C) for about 25-30 min. Make the topping while the cake is in the oven.

Step 7

Take the cake out of the oven and turn the oven up to 440 F (225 C).

Step 8

Spread the topping over the cake.

Step 9

Put the cake back in the oven and let it bake for 5 more minutes.

Step 10

Let the cake cool before serving or storing it in an air-tight container for later use.

Step 11

Put the butter, coconut flour, brown sugar and milk in a pot and let it come to the boiling point while constantly stirring.

Step 12

Immediately remove the pot from the heat once the mixture reaches the boiling point.

Step 13

Set aside until step 6 in the cake making is completed, then continue with step 7 of making the cake.