1Heat oven to 400°. Spray 12 medium muffin cups, 2 1/2x1 1/4 inches, with cooking spray, or line with paper baking cups and spray paper cups with cooking spray.
2Mix flour, oats, brown sugar, baking powder, cinnamon and salt in large bowl. Stir in milk, oil and egg whites all at once just until flour is moistened. Fold in carrots and zucchini. Divide batter evenly among muffin cups.
3Bake 16 to 21 minutes or until golden brown and toothpick inserted in center comes out clean. Immediately remove from pan. Serve warm.