Melt the butter, sugar and syrup in pan. Remove from the heat and stir in the oats, salt and mixed spice. Spoon the mixture into an 8 inch prepared tin.
Cook in the centre of a moderate oven 180 °C/350°F/gas mark 4 for 20-25 minutes or until golden brown. Leave in the tin to cool slightly then cut into finger bars.
Per serving: 658 Calories (kcal); 45g Total Fat; (59% calories from fat); trace Protein; 68g Carbohydrate; 120mg Cholesterol; 167mg Sodium Food Exchanges: 0 Grain(Starch); 0 Lean Meat; 0 Vegetable; 0 Fruit; 9 Fat; 4 1/2 Other Carbohydrates