Apple Crumb Cake

For the crumb topping:
Mix together butter, sugar, flour, and salt with a pastry blender or a fork till you get a crumbly mixture. Mix in the chopped walnuts and refrigerate till required.

For the cake:
Preheat the oven to 180ºC (about 355ºF). Grease and line the bottom and sides of an 8″ round or a square pan.

Sift together flour, baking powder, baking soda, salt and cinnamon powder. Reserve.

Beat the butter and sugar on medium speed until light, about 3 minutes. Mix in the eggs one by one, beating for about 1 minute after each addition, followed by vanilla.

Add the flour and yogurt alternately, beginning and ending with flour. Beat till you get a smooth batter. Batter will be thick. Mix in the diced apples.

Transfer the batter into the prepared pan and even out the top using a spatula. Sprinkle over the crumb topping evenly.

Bake for 50-60 minutes or till the crumbs are golden and a toothpick inserted into the cake comes out clean.

Serve plain or with some whipped cream or custard on the side.