Ingredients:

  • 100g granulated sugar
  • 60g all purpose flour
  • 1 tbsp ground cinnamon
  • 60g unsalted butter, melted
  • 250g all purpose flour
  • 200g granulated sugar
  • 2 tsp baking powder
  • 0.5 tsp salt
  • 2 large eggs, room temperature
  • 120ml whole milk
  • 115g unsalted butter, melted and cooled
  • 60ml neutral vegetable oil
  • 2 tsp vanilla bean paste
  • 3 large Granny Smith apples, peeled and diced
  • 1 tbsp cinnamon
  • 1 tbsp brown sugar
  • 120g powdered sugar
  • 2 tbsp heavy cream
  • 0.5 tsp vanilla extract

Instructions:

  1. Prep the oven. Preheat to 175°C and grease a 9 inch square or round baking pan. Note: Proper preheating ensures the baking powder reacts immediately.
  2. Mix the streusel. Combine 100g sugar, 60g flour, and 1 tbsp cinnamon, then stir in 60g melted butter until coarse, sandy crumbs form.
  3. Season the apples. Toss the diced Granny Smiths with 1 tbsp cinnamon and 1 tbsp brown sugar until they are glossy and coated.
  4. Whisk dry ingredients. Combine 250g flour, 200g sugar, baking powder, and salt in a large bowl.
  5. Emulsify wet ingredients. In a separate bowl, whisk 2 large eggs, 120ml milk, 115g melted butter, 60ml oil, and vanilla until the mixture is silky and pale.
  6. Combine the batter. Pour the wet ingredients into the dry, folding gently until just a few streaks of flour remain.
  7. Fold in fruit. Stir in the seasoned apples and any accumulated juices from the bowl.
  8. Layer and top. Spread the batter into the pan and sprinkle the streusel evenly over the top until no batter is visible.
  9. Bake the cake. Bake for 45 minutes until a skewer comes out clean and the top is dark gold.
  10. Glaze and cool. Whisk the glaze ingredients together and drizzle over the warm cake until it seeps into the crevices.