Roll out the pastry to approximately 4mm (1/4inch) depth. Brush with the melted butter and sprinkle over the fennel and mustard seeds. Sprinkle over the grated cheese. Chill in the fridge for 15 minutes or until the butter has solidified again.
Cut the pastry into long strips 2cm (1inch) wide and twist. Place each twisted strip onto a baking tray and place into a preheated oven for 5-7 minutes or until golden brown. Serve immediately.
Per serving: 365 Calories (kcal); 41g Total Fat; (98% calories from fat); 1g Protein; 1g Carbohydrate; 109mg Cholesterol; 415mg Sodium Food Exchanges: 0 Grain(Starch); 0 Lean Meat; 0 Vegetable; 0 Fruit; 8 Fat; 0 Other Carbohydrates