If you find yourself in search of a hearty, healthy and sustaining muffin with a complex balance of flavors look no further. Julia Moskin's whole grain blueberry muffins are perfect for breakfast and especially delicious when warmed. These muffins are sweet, but not sugary and they are jam packed with rolled oats, blueberries, 2 cups of grated carrots and toasted pecans. A cinnamon orange streusel beautifully tops them off.