Cream butter and sugar in a medium bowl.Add eggs and beat for a minute (slow). In a large bowl, combine all dry ingredients together. Add condensed milk and powdered milk dissolved in warm water to wet ingredients and mix well. Gently add the milk and butter mixture to flour while mixing in slow beat. Mix until No flour is seen. Fold in cubed cheese. Pour in lined muffin trays. Bake for 20 minutes in pre heated oven 180 degrees Celsius.