Peach Cake with Brown Sugar Frosting: For 12 - Arora's Recipe

Ingredients

• 3 cups (450g) fresh peaches, peeled and diced into 1/2 inch cubes
• 1 tbsp (15ml) fresh lemon juice
• 2 tsp (5g) ground Korintje cinnamon
• 1 tbsp (8g) cornstarch
• 3 cups (375g) all-purpose flour, sifted
• 1 ½ tsp (7g) baking powder
• ½ tsp (3g) baking soda
• 1 tsp (6g) fine sea salt
• 1 cup (225g) unsalted butter, softened to 65°F
• 1 ½ cups (300g) light brown sugar, packed
• ½ cup (100g) granulated white sugar
• 3 large eggs, room temperature
• 1 tbsp (15ml) pure vanilla bean paste
• 1 cup (240ml) full-fat buttermilk, room temperature
• ½ cup (115g) unsalted butter (for frosting)
• 1 cup (200g) dark brown sugar (for frosting)
• 1/3 cup (80ml) heavy whipping cream (for frosting)
• 1 tsp (5ml) vanilla extract (for frosting)
• 2 cups (240g) confectioners' sugar, sifted (for frosting)