Spice cake with caramel pecan glaze

Name: Spice cake with caramel pecan glaze
Prep time: 10 min
Cook time: 45 min
Total time: 45 min
Yield: 18 pieces
Ingredients: unsalted butter; 1 cinnamon quill; 4 whole cloves; 3 allspice berries; 120 g brown sugar; 3 eggs; 200 g vegetable oil; 250 g plain flour; 1 tsp bicarbonate of soda; ½ tsp ground ginger; ¼ tsp grated nutmeg; 2 pinches sea salt; 200 g apples; 30 g unsalted butter; 30 g brown sugar; 150 g icing sugar; 1 tsp vanilla bean paste; 20 g boiling water; 3 tbsp pecan nuts