Judy's Fabulous Chocolate Muffins

1 3/4 Cups of flour
1 Cup sugar
1/4 Cup of Cocoa
1/2 Cup Chocolate pieces
1 Teaspoon Baking soda
Mix dry ingredients together.

100gms melted butter
1 Cup Yoghurt
1/2 cup milk
1 egg beat together and then mix into dry ingredients.

Makes 12 muffins
Cook 180* 20 minutes