Butter your microwave dish (mine is a ceramic dish which is 13 ½ cm x 18 cm (5 ½ inches x 7 ¼ inches) approximately. Try to find one of a similar size, glass, ceramic or plastic. A bit bigger or smaller is ok.
Add the butter, golden syrup and apple sauce to a microwave friendly bowl and melt for about 1 minute. Set aside.
Add the oats, flour, brown sugar, grated apple, cinnamon and salt to a mixing bowl and mix well.
Pour in the wet ingredients and mix well to allow all the oats to be well coated.
Spoon into your buttered microwave dish and press down really well with the back of a spoon. You want the surface as even as possible and the mixture well compacted to prevent the bars being crumbly.
Microwave for 4 minutes, sit for 2 minutes, then microwave for 3 ½ minutes. See notes below, your microwave may be more or less powerful and you will have to adjust the time.
Cut the bars in the dish and leave to cool in the dish. it will firm slightly as it cools.
Enjoy!
Notes
My microwave is 800 watts. If yours is a higher wattage, you may want to take the flapjacks out a minute or so early. If your microwave is less powerful, the flapjacks may need an extra minute or two.
You can skip the icing.
The bars can be cut into 16 squares to half the calories, skipping the icing will also reduce the calories.
These bars are good crumbled on ice cream or yoghurt.