Warm and inviting and especially good with butter or frosting on the top, nothing starts the day or completes a meal like a muffin. The good news is that nearly all fruits, nuts or vegetables are perfectly at home in a muffin surrounded by sweet and delicate cake. Try finely shredded carrots in a muffin along with raisins and spice for a carrot cake muffin. Then top your carrot cake muffin with a simple cream cheese frosting for a real taste treat. Serve the muffins warm from the oven with a steaming cup of coffee or tea for a snack. Or, serve your muffins as the bread course for a fine meal.