Turkey Ham and Veggie Muffins

Ingredients

• 12 ounces (340 g) all-purpose flour
• 2 teaspoons (8 g) baking powder
• 1 (2 oz or 60 g) whole egg
• 1 cup (8 fl oz or 250 ml) whole milk
• 2 tablespoons (2 oz or 30 g) butter, melted
• 3 oz. (85 g) turkey ham, chopped
• 1 (5 oz or 150 g) onion, chopped
• 1 cup (4 oz or 125 g) sharp cheddar cheese
• 2 tablespoons (15 g) fresh mixed herbs
• salt and freshly ground black pepper