2. Mix in lemon juice and butter in the stoneware bowl of the solar cooker.
3. Peel the banana and roll it in the butter mixture.
4. Add the cinnamon and the brown sugar and mix in well.
5. Place it in the solar cooker and let it cook in the sun for 1 hour and 45 minutes.
6. Plate it and serve it garnished with coconut flakes.