Cream butter and sugar until fluffy and creamy. Add the eggs and continue mixing gently, pour the flour in a bowl, add the baking powder, and cinnamon powder and add gently to the wet mixture. Mix until all ingredients are fully combined. Add your desired flavour.

Separate little portion of the cake mixture in a bowl and add the browning. Grease your pack with butter and dust with little flour, pour in the plain mixture, add the browned portion and bake until a toothpick inserted in the middle comes out clean.