Line the crockpot with parchment and spray with oil

Combine the pineapple and brown sugar and stir until the brown sugar has dissolved into the pineapple

Add the cherries to the crockpot and top with the pineapple mixture

In a separate bowl combine the flour, milk, and vanilla and stir to combine

Pour this mixture on top of the pineapple.

Top with the melted butter

Cook on low for 4 hours and high for 2 hours. The last 30 minutes of cooking time you will need to vent your crockpot lid to encourage the release of condensation.

Once the cake is cooked through place between 2 plates and flip the cake on to the plate.

Remove the parchment

Enjoy!