01 -  Preheat oven to 350°F. Line or lightly grease a muffin tin (at least 6 standard cups). 
 02 -  In a large mixing bowl, whisk together flour, sugar, baking powder, ground ginger, ground cinnamon, and salt until evenly combined. 
 03 -  In a separate bowl, whisk melted butter, whole milk, egg, and vanilla extract until smooth. 
 04 -  Pour wet ingredients into the dry mixture and stir gently until just combined. Avoid overmixing. 
 05 -  Add chopped dried cranberries to the batter, folding until evenly distributed. 
 06 -  Spoon batter into muffin tin, dividing evenly. Bake for 18 to 20 minutes or until a toothpick inserted into the center comes out clean. Cool completely on a wire rack. 
 07 -  Crumble cooled muffins into a large mixing bowl. Add softened cream cheese and optionally, crystallized ginger. Mix thoroughly until the mixture forms a dough that holds together. 
 08 -  Line a baking sheet with parchment paper. Roll mixture into 1-inch balls, yielding approximately 24 pieces. Chill truffle balls in the freezer for 20 minutes to firm. 
 09 -  Gently melt white chocolate in a heatproof bowl set over simmering water or microwave in short bursts, stirring until smooth. 
 10 -  Dip each chilled truffle ball into melted white chocolate, ensuring even coverage. Place coated truffles back onto parchment paper. 
 11 -  Immediately sprinkle coated truffles with extra dried cranberries or crystallized ginger if desired. Let truffles harden at room temperature or chill briefly before serving.