Preheat oven to 375 (for big muffins 350 for 40-45 minutes)

Mix sugar, oil, egg, milk, and vanilla well

Stir in sour cream

Stir baking powder and flour in until just combined

Fold in cranberries and white chocolate chips

Scoop batter into a muffin tin or silicone muffin cups

Bake for 25-30 minutes

Makes 8-12 muffins (depending on how much batter goes in each cup)