Cinnamon sugar muffin bites

Ingredients

• 60 gram butter, at room temperature
• 1/3 cup caster sugar
• 1 egg, at room temperature
• 1 cup self-raising flour
• 1/3 cup milk
• 1/2 teaspoon vanilla essence
• 1 teaspoon ground cinnamon
• 1 cup canned peaches, drained, diced
• To dip
• 50 gram butter, melted
• 1/4 cup caster sugar
• 1 tablespoon ground cinnamon