White Chocolate Raspberry Muffins

Ingredients for 20 muffins

1/2 cup (1 stick) unsalted butter, melted and slightly cooled
3/4 cup granulated sugar
1/3 cup plain greek yogurt
1 large egg
1 tablespoon vanilla extract
2 cups all-purpose flour
2 teaspoons baking powder
1/2 teaspoon salt
1 cup milk
1 pint fresh raspberries
1 cup white chocolate chips
1 tablespoon fresh orange zest (optional)
2 cups powdered sugar
2 tablespoons milk
2 teaspoons vanilla extract

Read the Instructions here