Slow-cooked jersey milk porridge with cinnamon apple topping recipe

Name: Slow-cooked jersey milk porridge with cinnamon apple topping recipe
Cuisine: European, British
Ingredients: 20g unsalted butter, softened, to grease; 2 cups (365g) steel-cut oats; 2 cups (500ml) Jersey cow milk (substitute good-quality milk), plus extra warmed to serve; 2 tbs fine semolina; 1/2 cup (50g) barley bran (from health food shops); 1/2 cup (125ml) maple syrup; Topping of your choice, to ser; 3 green apples; 1/4 cup (60ml) rice malt syrup; 1 tsp ground cinnamon; 1/2 teaspoon vanilla bean paste; Pinch of salt flakes; 30g unsalted butter; Cinnamon quills (optional); Handful of toasted walnuts