Ingredients

100g unsalted butter, plus an extra 100g unsalted butter, softened
290g sugar
4 Granny Smith apples (or other tart apples), cored, diced, peel can be left on for more flavour
½ teaspoon lemon juice
¼ teaspoon cinnamon
300g flour
1½ teaspoons vanilla paste
100g macadamias, chopped
20g brown sugar
½ teaspoon salt
3 medium eggs, room temperature
50g sour cream
2 teaspoons baking powder

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Instructions

1.For the apple filling, heat 20g butter and 50g sugar in a pan over a medium heat until bubbling and leave to bubble for a few minutes until golden.
2.Add the diced apple – the caramel will set for a couple of seconds, but keep stirring until it starts dissolving again.
3.Add the lemon juice and cinnamon, cook for about 5 minutes, stirring, then set aside.
4.To make the macadamia crumble, melt 80g butter and cool.
5.Mix 150g flour, 90g sugar, ½ teaspoon vanilla paste, the macadamia pieces and a pinch of salt, then add melted butter and mix quickly.
6.You should have a crumbly texture; if it is too wet add a bit more flour, if too dry add some more melted butter. Set aside.
7.Heat the oven to 160°C and line a 20cm cake tin.
8.Using a stand mixer with the whisk attachment, whip the softened butter with the remaining 150g sugar, brown sugar, 1 teaspoon vanilla paste and salt until pale and creamy, about 5 minutes, scraping down the sides of the bowl as you go.
9.Add the eggs one by one, mixing well between each egg (don’t be concerned if the mixture looks like it might split).
10.Whisk in the sour cream, scraping down the sides of the bowl with a spatula.
11.Add the remaining 150g flour in two lots along with the baking powder and fold into the creamed mixture, making sure not to over mix the batter.
12.Spoon the batter into the prepared cake tin and smooth it out using a spatula.
13.Add the cooked apples and spread evenly, pressing a little into the batter, then top with the crumble.
14.Bake for 65-70 minutes until the crumble is golden and crispy and a toothpick comes out clean.
15.Cool in the tin for 5 minutes, then turn out of the tin to finish cooling on a rack.
16.Serve with yoghurt, custard or whipped cream.

Recipes Annie Niemann & Lisa Sutherland / Photography Aaron McLean / Styling Fiona Smith & Aaron McLean