Sweet & Savoury Muffins

Ingredients

• null 75g Anchor Unsalted Butter, cubed (at room temperature)
• null 250g Anchor Sour Cream
• 300g plain flour
• 2 teaspoons baking powder
• ½ teaspoon baking soda
• ¼ teaspoon salt
• 2 large eggs
• 1/3 cup vegetable oil
• 200g sugar
• 2 teaspoons vanilla extract
• zest of 1 lemon
• 150g fresh or frozen raspberries
• 100g ham, finely chopped
• 150g Cheddar cheese, grated
• 1 tablespoon finely chopped chives