Air Fryer Brown Butter Chocolate Cake - St Helen's Farm Goat's Milk

Ingredients

• Cooking oil spray
• 120g Plain flour, plus more for dusting cake tin
• 3 tbsp Cocoa powder
• 1/2 tsp Baking powder
• 1/4 tsp Baking soda
• 1/4 Salt
• 3 tbsp Apple sauce
• 3 tbsp St Helens Farm Natural Yogurt
• 4 1/2 tsp Oil
• 1 tsp Instant coffee
• 1/2 Vanilla extract
• 1 large egg
• 100g Sugar
• 28g Dark Chocolate, chopped, plus extra for topping
• 5 tbsp St Helens Farm Goats Butter
• 2 tbsp Honey
• 1/2 tsp Vanilla extract
• 85g Icing sugar
• 2 tsp water, if needed