Choko and pineapple muffins

Adapted from https://www.annettemcfarlane.com/_Choko_Muffins.htm

Ingredients: 1½ cups fresh pineapple; 1½ cups fresh chokos; 1 egg; 125g butter; 1 cup sugar; 2 cups self raising flour; 2 tablespoons milk; pinch salt; 1 teaspoon brown sugar; ½ teaspoon cinnamon

Method: Peel pineapple & chokos. Dice into small pieces. Boil in 2 cups water for 5 minutes. Preheat oven to 180º C. Grease muffin tin. Drain liquid from cooked pineapple & choko pulp. Beat egg with fruit pulp. Rub butter into coconut, sugar, flour, milk & salt. Mix with pulp & egg mixture. Fill each muffin tray to 3/4 full. Sprinkle brown sugar & cinnamon on top. Put immediately into oven & cook until golden brown.