Read the text and answer question
Traditional American cake bars
100g butter 1tsp. vanilla ½ tsp baking powder
200g sugar ¼ tsp salt 100g chopped walnuts
2 eggs 100g flour 50g chocolate U
Melt _____ chocolate and butter and mix carefully.
Add _____ sugar and mix again until smooth. Leave to cool.
Add _____ eggs and vanilla and mix.
Add _____ flour, baking powder, and salt, and mix until well-combined.
Stir in the walnuts.
Put the mix in a cake tin and cook for 25min at 175°C.
Eat with fruit or ice cream.