In a frying pan (skillet) fry bacon over a medium-high heat until light and golden stirring often, about 4 minutes.

Remove to a kitchen paper covered plate

Increase heat to high, add oil and mushrooms to the frying pan and cook for 5 minutes till tender and then set aside to cool.

Preheat oven to 200 degree celsius

Grease a 12 hole muffin tin (regular size) or a 6 texas size (3/4 cup) muffin tin.

Sift flour, baking powder and salt and pepper into a bowl and add cheese and chives and mix together

Whisk butter, egg and milk in a jug and pour into dry ingredients, stirring gently until almost combined

Fold through the bacon and mushrooms.

Spoon mixture into prepared pan.

Bake for about 15 to 18 minutes for regular size muffins and about 20 to 25 for texas size.