Steps for preparation

Sift the sorghum flour, all-purpose flour, baking powder, cocoa and baking soda in a bowl.
In another bowl, mix the condensed milk, milk, vanilla essence and the melted butter and mix thoroughly.
Add the wet ingredients to the flour mixture and mix only until the ingredients are well combined.
Grease the muffin cups with a little oil and spoon the batter till three-fourths full
Place in a preheated oven and bake at 180°C (360°F) for 30-40 minutes or till a toothpick inserted comes out clean.