• Peel core and slice Apple and soak in lemon juice and set aside.
• Combine butter and sugar in mixer.
• Add egg, vanilla essence, and cinnamon. Mix until combined.
• Add flour and milk alternately while mixing until all combined.
• Pour mixture into buttered and floured slow cooker insert.
• Push Apple slices into top anyway you like (unless very thin, they will sink to the middle anyway)
• I added a sprinkle of cinnamon sugar over the top.
• Pop tea towel under lid.
• Tea Towel Trick
• Cook on high for 1 1/2 - 2 hours until skewer comes out of the centre clean.

Notes

• Turn slow cooker every half hour to avoid burning (1.5L slow cookers have a hot spot)
• To make non stick coating for slow cooker insert (cake comes out easier and isn't wrinkly like with baking paper) Rub the slow cooker insert with margarine/spread on some paper towel, then coat with some flour. Tip out excess flour and set slow cooker aside.