Potato Streusel Cake - cooking recipe

Ingredients

3/4 cup mashed potatoes
3/4 cup sugar
60 g butter
1 dash lemon essence
1 egg
1 pinch nutmeg
3/4 cup milk
2 cups self raising flour
1/2 cup sultana
Streusel
3/4 cup sugar
3/4 cup plain flour
1 pinch nutmeg
1 pinch cinnamon
2 ounces soft butter

Preparation

Preheat oven to 190 deg Celsius then grease and paper line a swiss-roll tin.
Mix first 6 ingredients.
Add milk then fold in flour and sultanas.
Spread into tin so it is about 3/4 inch thick. Top with streusel.
Bake for 25-30 minutes.
Streusel: Mix all dry ingredients then blend, with fingers, enough butter to form crumbs and small lumps.