Welsh rarebit breakfast muffins - Starts at 60

Ingredients

• 225g self-raising flour
• 50g plain flour
• 1 teaspoon baking powder
• ½ level teaspoon bicarbonate of soda
• ¼ teaspoon salt
• ½ level teaspoon mustard powder
• 100g strong cheese, half grated, half cubed
• 6 tablespoon vegetable oil
• 150g Greek yogurt
• 125ml milk
• 1 egg
• 1 tablespoon Worcestershire sauce