1Heat oven to 400°F. Spray 18 regular-size muffin cups with cooking spray.
2In large bowl, stir together flour, sugar, baking powder and salt with whisk. Make well in center of dry ingredients. Add milk, oil, vanilla and egg; stir until combined (batter will be thick). Stir in cranberry sauce.
3Divide batter evenly among muffin cups, filling each about three-fourths full.
4Bake about 20 minutes or until toothpick inserted in center comes out clean. Cool slightly before serving.