Cuca (german sweet bread) I

Cuca is a german sweet bread that my mum used to make at home. It is crunchy and sweet and can be filled with jam, chocolate or just plain.
This is the first variation from the ordinary recipe, which uses yeast. If you use yeast it tastes more like sweet bread. If you use baking soda, it tastes more like sponge cake. This one is with baking soda (which makes this recipe faster and easier) and no filling, so basic cuca today.

Time of preparation: 1 hour

4 cups of flour
2 cups of sugar
1 cup of milk
4 eggs
2 tbspoons of butter
2 tbspoons of baking soda

Crums:
1 cup of sugar
1/2 cup of flour
cinnamon
1 tbspoon of butter

Mix the eggs, the sugar and all the other ingredients until you get a homogeneous cake mix. Grease a tray, put on the cake mix and put the crums on top. Take it to a preheated oven for approximately 40 min (200 C). Stab it with a fork or toothpick to make sure it is ready.

For the crums, mix the ingredients in a big bowl and sprinkle the crums on top of the cake mix.

My biggest mistake when making this recipe is that my cake grew too much and swallowed the crums. If this happens to you, divide the cake mix in 2 trays.