Preheat your oven to 350°F (175°C). Grease the muffin tin or line with paper liners.
In a large mixing bowl, whisk together the flour, sugar, baking powder, and salt until combined.
In another bowl, combine the melted butter, milk, eggs, and vanilla extract. Whisk until smooth.
Pour the wet ingredients into the dry ingredients and mix gently with a rubber spatula until just combined. Be careful not to overmix; the batter should be slightly lumpy.
Fold in the mixed dried fruit until evenly distributed.
Using a spoon, fill each muffin cup about ⅔ full with batter.
Bake in the preheated oven for 18-20 minutes or until a toothpick inserted in the center comes out clean.
Allow the muffins to cool in the pan for about 5 minutes, then transfer them to a cooling rack to cool completely.
Once cooled, top each muffin with colorful sprinkles for a festive look.